Update latest news section in README.md

Signed-off-by: Samit <285365963@qq.com>

.buildkite/cuda/test-nightly.yml

@@ -345,7 +345,7 @@ steps:
         commands:
           - export DIFFUSION_BENCHMARK_DIR=tests/dfx/perf/results
           - export DIFFUSION_ATTENTION_BACKEND=FLASH_ATTN
-          - export CACHE_DIT_VERSION=1.3.0
+          - export CACHE_DIT_VERSION=1.5.0
           - |
             set +e
             pytest -s -v tests/dfx/perf/scripts/run_diffusion_benchmark.py --test-config-file tests/dfx/perf/tests/test_qwen_image_vllm_omni.json
@@ -361,7 +361,7 @@ steps:
         commands:
           - export DIFFUSION_BENCHMARK_DIR=tests/dfx/perf/results
           - export DIFFUSION_ATTENTION_BACKEND=FLASH_ATTN
-          - export CACHE_DIT_VERSION=1.3.0
+          - export CACHE_DIT_VERSION=1.5.0
           - |
             set +e
             pytest -s -v tests/dfx/perf/scripts/run_diffusion_benchmark.py --test-config-file tests/dfx/perf/tests/test_qwen_image_edit_vllm_omni.json
@@ -377,7 +377,7 @@ steps:
         commands:
           - export DIFFUSION_BENCHMARK_DIR=tests/dfx/perf/results
           - export DIFFUSION_ATTENTION_BACKEND=FLASH_ATTN
-          - export CACHE_DIT_VERSION=1.3.0
+          - export CACHE_DIT_VERSION=1.5.0
           - |
             set +e
             pytest -s -v tests/dfx/perf/scripts/run_diffusion_benchmark.py --test-config-file tests/dfx/perf/tests/test_qwen_image_edit_2511_vllm_omni.json
@@ -393,7 +393,7 @@ steps:
         commands:
           - export DIFFUSION_BENCHMARK_DIR=tests/dfx/perf/results
           - export DIFFUSION_ATTENTION_BACKEND=FLASH_ATTN
-          - export CACHE_DIT_VERSION=1.3.0
+          - export CACHE_DIT_VERSION=1.5.0
           - |
             set +e
             pytest -s -v tests/dfx/perf/scripts/run_diffusion_benchmark.py --test-config-file tests/dfx/perf/tests/test_qwen_image_layered_vllm_omni.json
@@ -409,7 +409,7 @@ steps:
         commands:
           - export DIFFUSION_BENCHMARK_DIR=tests/dfx/perf/results
           - export DIFFUSION_ATTENTION_BACKEND=FLASH_ATTN
-          - export CACHE_DIT_VERSION=1.3.0
+          - export CACHE_DIT_VERSION=1.5.0
           - |
             set +e
             pytest -s -v tests/dfx/perf/scripts/run_diffusion_benchmark.py --test-config-file tests/dfx/perf/tests/test_bagel_vllm_omni.json
@@ -456,7 +456,7 @@ steps:
         timeout_in_minutes: 90
         commands:
           - pytest -s -v tests/e2e/offline_inference/test_wan22_autoround_w4a16_expansion.py -m "full_model and cuda" --run-level "full_model"
-          - pytest -s -v tests/e2e/online_serving/test_wan_2_1_vace_expansion.py tests/e2e/online_serving/test_ltx2_expansion.py -m "full_model and cuda" --run-level "full_model"
+          - pytest -s -v tests/e2e/online_serving/test_wan_2_1_vace_expansion.py tests/e2e/online_serving/test_ltx.py -m "full_model and cuda" --run-level "full_model"
         mirror_hardwares: h100_2
 
       - label: ":full_moon: Diffusion X2V · Wan2.2 Accuracy Test"
@@ -477,10 +477,16 @@ steps:
         commands:
           - pytest -s -v tests/e2e/accuracy/hunyuanvideo15_t2v/test_hunyuanvideo15_t2v_video_similarity.py -m full_model --run-level full_model
           - pytest -s -v tests/e2e/accuracy/hunyuanvideo15_i2v/test_hunyuanvideo15_i2v_video_similarity.py -m full_model --run-level full_model
-          - pytest -s -v 'tests/e2e/accuracy/ltx/test_ltx_official_similarity.py::test_ltx_one_stage_matches_official[ltx2_3_i2v]' -m full_model --run-level full_model
           - pytest -s -v tests/e2e/accuracy/test_video_streaming_output_similarity.py -m full_model --run-level full_model
         mirror_hardwares: h100_2
 
+      - label: ":full_moon: Diffusion X2V · LTX Accuracy Test"
+        timeout_in_minutes: 180
+        commands:
+          - pytest -s -v 'tests/e2e/accuracy/ltx/test_ltx_official_similarity.py::test_ltx_matches_official[ltx2_3_i2v]' -m full_model --run-level full_model
+          - pytest -s -v 'tests/e2e/accuracy/ltx/test_ltx_official_similarity.py::test_ltx_matches_official[ltx23_two_stage_layer_fused_i2v]' -m full_model --run-level full_model
+        mirror_hardwares: h100_1
+
       - label: ":full_moon: Diffusion X2V · Perf Test"
         key: nightly-diffusion-x2v-performance
         timeout_in_minutes: 180

.buildkite/cuda/test-ready.yml

@@ -227,6 +227,18 @@ steps:
             "
         mirror_hardwares: h100_1
 
+      - label: "Omni · MiniCPM-o 4.5 Perf Test"
+        timeout_in_minutes: 60
+        source_file_dependencies:
+          - tests/dfx/perf/tests/test_minicpmo_4_5_ready.json
+          - vllm_omni/deploy/minicpmo_4_5.yaml
+          - vllm_omni/model_executor/models/minicpmo_4_5/
+          - vllm_omni/model_executor/stage_input_processors/minicpmo_4_5_omni.py
+        commands:
+          - export BENCHMARK_DIR=tests/dfx/perf/results
+          - pytest -s -v tests/dfx/perf/scripts/run_benchmark.py --test-config-file tests/dfx/perf/tests/test_minicpmo_4_5_ready.json -m 'core_model and cuda'
+        mirror_hardwares: h100_1
+
       - label: "TTS · VoxCPM2 Test"
         source_file_dependencies:
           - tests/e2e/online_serving/test_voxcpm2_tts.py

.buildkite/npu/test-npu-nightly.yml

@@ -115,7 +115,7 @@ steps:
           DIFFUSION_ATTENTION_BACKEND: TORCH_SDPA
         commands:
           - export DIFFUSION_BENCHMARK_DIR=tests/dfx/perf/results
-          - export CACHE_DIT_VERSION=1.3.0
+          - export CACHE_DIT_VERSION=1.5.0
           - |
             set +e
             pytest -s -v tests/dfx/perf/scripts/run_diffusion_benchmark.py -m npu --test-config-file tests/dfx/perf/tests/test_qwen_image_edit_2511_vllm_omni.json

.buildkite/npu/test-npu-ready.yml

@@ -17,6 +17,15 @@ steps:
           VLLM_ALLOW_LONG_MAX_MODEL_LEN: "1"
         commands:
           - pytest -s -v tests/e2e/online_serving/test_minicpmo_4_5_duplex.py -m 'core_model and npu and A3 and omni' --run-level 'core_model'
+      - label: "Omni · MiniCPM-o 4.5 Perf Test"
+        timeout_in_minutes: 60
+        mirror_hardwares: a3_npu_2
+        env:
+          VLLM_WORKER_MULTIPROC_METHOD: spawn
+          VLLM_ALLOW_LONG_MAX_MODEL_LEN: "1"
+        commands:
+          - export BENCHMARK_DIR=tests/dfx/perf/results
+          - pytest -s -v tests/dfx/perf/scripts/run_benchmark.py --test-config-file tests/dfx/perf/tests/test_minicpmo_4_5_ready.json -m 'core_model and npu and A3 and omni'
 
   - group: ":card_index_dividers: TTS Model Test"
     key: ready-tts-group

.buildkite/release/release-pipeline.yml

@@ -40,9 +40,11 @@ steps:
     commands:
       - "bash .buildkite/release/scripts/publish-release-wheels-pypi.sh"
 
+  # Auto-skip when NIGHTLY=1 (scheduled); otherwise require manual unblock.
   - block: "Unblock to build release Docker images"
     depends_on: ~
     key: block-build-release-images
+    if: build.env("NIGHTLY") != "1"
 
   - group: "Build release Docker images"
     key: "build-release-images"
@@ -63,7 +65,7 @@ steps:
               --progress plain \
               -f docker/Dockerfile.cuda .
           - "docker push public.ecr.aws/q9t5s3a7/vllm-omni-release-repo:$BUILDKITE_COMMIT-$(uname -m)"
-          # re-tag to default image tag and push, just in case arm64 build fails
+          # Fallback default tag (no arch suffix) if arm64 build fails.
           - "docker tag public.ecr.aws/q9t5s3a7/vllm-omni-release-repo:$BUILDKITE_COMMIT-$(uname -m) public.ecr.aws/q9t5s3a7/vllm-omni-release-repo:$BUILDKITE_COMMIT"
           - "docker push public.ecr.aws/q9t5s3a7/vllm-omni-release-repo:$BUILDKITE_COMMIT"
         env:
@@ -86,6 +88,26 @@ steps:
         env:
           DOCKER_BUILDKIT: "1"
 
+  # NIGHTLY=1 only: promote ECR images to DockerHub nightly tags, then prune.
+  - label: "Publish nightly multi-arch image to DockerHub"
+    depends_on:
+      - build-release-image-x86
+      - build-release-image-arm64
+    if: build.env("NIGHTLY") == "1"
+    key: publish-nightly-images-dockerhub
+    agents:
+      queue: small_cpu_queue_release
+    commands:
+      - "bash .buildkite/release/scripts/publish-release-images.sh nightly"
+      - "bash .buildkite/release/scripts/cleanup-nightly-builds.sh"
+    plugins:
+      - docker-login#v3.0.0:
+          username: vllmbot
+          password-env: DOCKERHUB_TOKEN
+    env:
+      DOCKER_BUILDKIT: "1"
+      DOCKERHUB_USERNAME: "vllmbot"
+
   - block: "Publish release images to DockerHub"
     key: block-publish-release-images
     depends_on:

.buildkite/release/scripts/cleanup-nightly-builds.sh

@@ -0,0 +1,147 @@
+#!/bin/bash
+# SPDX-License-Identifier: Apache-2.0
+#
+# Clean up old nightly builds from DockerHub (vllm/vllm-omni), keeping the
+# newest 14 tags with the nightly- prefix.
+
+set -ex
+
+TAG_PREFIX="nightly-"
+REPO="vllm/vllm-omni"
+REPO_API_URL="https://hub.docker.com/v2/repositories/${REPO}/tags"
+
+echo "Cleaning up tags with prefix: $TAG_PREFIX in repository: $REPO"
+
+if [ -z "$DOCKERHUB_TOKEN" ]; then
+  echo "Error: DOCKERHUB_TOKEN environment variable is not set"
+  exit 1
+fi
+
+if [ -z "$DOCKERHUB_USERNAME" ]; then
+  echo "Error: DOCKERHUB_USERNAME environment variable is not set"
+  exit 1
+fi
+
+echo "Getting DockerHub bearer token..."
+set +x
+BEARER_TOKEN=$(curl -s -X POST \
+  -H "Content-Type: application/json" \
+  -d "{\"username\": \"$DOCKERHUB_USERNAME\", \"password\": \"$DOCKERHUB_TOKEN\"}" \
+  "https://hub.docker.com/v2/users/login" | jq -r '.token')
+set -x
+
+if [ -z "$BEARER_TOKEN" ] || [ "$BEARER_TOKEN" = "null" ]; then
+  echo "Error: Failed to get DockerHub bearer token"
+  exit 1
+fi
+
+get_all_tags() {
+  local page=1
+  local all_tags=""
+  # Hub `name` is a partial match (not a strict prefix). Use it to narrow the
+  # list, then enforce startswith() client-side. Exhaust API pages; do not
+  # stop merely because a page has no matching tags after filtering.
+  local name_query
+  name_query=$(printf '%s' "$TAG_PREFIX" | jq -sRr @uri)
+
+  while true; do
+    set +x
+    local response
+    response=$(curl -s -H "Authorization: Bearer $BEARER_TOKEN" \
+      "$REPO_API_URL?page=$page&page_size=100&name=${name_query}")
+    set -x
+
+    local page_count
+    page_count=$(echo "$response" | jq -r '.results | length')
+    if [ -z "$page_count" ] || [ "$page_count" = "0" ] || [ "$page_count" = "null" ]; then
+      break
+    fi
+
+    local tags
+    tags=$(echo "$response" | jq -r --arg prefix "$TAG_PREFIX" \
+      '.results[] | select(.name | startswith($prefix)) | "\(.last_updated)|\(.name)"')
+
+    if [ -n "$tags" ]; then
+      all_tags="$all_tags$tags"$'\n'
+    fi
+    page=$((page + 1))
+  done
+
+  echo "$all_tags" | sort -r | cut -d'|' -f2
+}
+
+delete_tag() {
+  local tag_name="$1"
+  echo "Deleting tag: $tag_name"
+
+  local delete_url="https://hub.docker.com/v2/repositories/${REPO}/tags/$tag_name"
+  set +x
+  local response http_code body
+  response=$(curl -s -w "\n%{http_code}" -X DELETE \
+    -H "Authorization: Bearer $BEARER_TOKEN" "$delete_url")
+  set -x
+  http_code=$(printf '%s\n' "$response" | tail -n1)
+  body=$(printf '%s\n' "$response" | sed '$d')
+
+  if [ "$http_code" -ge 200 ] && [ "$http_code" -lt 300 ]; then
+    echo "Successfully deleted tag: $tag_name (HTTP ${http_code})"
+    return 0
+  fi
+
+  local detail=""
+  if echo "$body" | jq -e '.detail' > /dev/null 2>&1; then
+    detail=$(echo "$body" | jq -r '.detail')
+  elif [ -n "$body" ]; then
+    detail="$body"
+  else
+    detail="(empty response body)"
+  fi
+  echo "Error: Failed to delete tag $tag_name (HTTP ${http_code}): ${detail}"
+  return 1
+}
+
+echo "Fetching all tags from DockerHub..."
+all_tags=$(get_all_tags)
+
+if [ -z "$all_tags" ]; then
+  echo "No tags found to clean up"
+  exit 0
+fi
+
+total_tags=$(echo "$all_tags" | wc -l)
+echo "Found $total_tags tags"
+
+tags_to_keep=14
+tags_to_delete=$((total_tags - tags_to_keep))
+
+if [ $tags_to_delete -le 0 ]; then
+  echo "No tags need to be deleted (only $total_tags tags found, keeping $tags_to_keep)"
+  exit 0
+fi
+
+echo "Will delete $tags_to_delete old tags, keeping the newest $tags_to_keep"
+
+tags_to_delete_list=$(echo "$all_tags" | tail -n +$((tags_to_keep + 1)))
+
+if [ -z "$tags_to_delete_list" ]; then
+  echo "No tags to delete"
+  exit 0
+fi
+
+echo "Deleting old tags..."
+delete_failures=0
+while IFS= read -r tag; do
+  if [ -n "$tag" ]; then
+    if ! delete_tag "$tag"; then
+      delete_failures=$((delete_failures + 1))
+    fi
+    sleep 1
+  fi
+done <<< "$tags_to_delete_list"
+
+if [ "$delete_failures" -gt 0 ]; then
+  echo "Cleanup finished with ${delete_failures} deletion failure(s)"
+  exit 1
+fi
+
+echo "Cleanup completed successfully"

.buildkite/release/scripts/publish-release-images.sh

@@ -1,50 +1,87 @@
 #!/bin/bash
 # SPDX-License-Identifier: Apache-2.0
 #
-# Publish release Docker images from ECR to DockerHub.
-# Pulls per-arch images, tags with `latest` and versioned tags, pushes them,
-# then creates and pushes a multi-arch manifest.
+# Publish Docker images from ECR staging to DockerHub.
+#
+# Usage:
+#   publish-release-images.sh            # release mode (default)
+#   publish-release-images.sh release
+#   publish-release-images.sh nightly
+#
+# Release tags: latest, v<version>
+# Nightly tags: nightly, nightly-<commit>
 
 set -euo pipefail
 
-RELEASE_VERSION=$(buildkite-agent meta-data get release-version --default "" | sed 's/^v//')
-if [ -z "${RELEASE_VERSION}" ]; then
-  echo "ERROR: release-version metadata not set"
-  exit 1
-fi
+MODE="${1:-release}"
 
-COMMIT="$BUILDKITE_COMMIT"
 DOCKERHUB_REPO="vllm/vllm-omni"
 ECR_REPO="public.ecr.aws/q9t5s3a7/vllm-omni-release-repo"
+COMMIT="$BUILDKITE_COMMIT"
+PRIMARY_TAGS=()
+EXTRA_MANIFEST_TAGS=()
+
+case "${MODE}" in
+  release)
+    RELEASE_VERSION=$(buildkite-agent meta-data get release-version --default "" | sed 's/^v//')
+    if [ -z "${RELEASE_VERSION}" ]; then
+      echo "ERROR: release-version metadata not set"
+      exit 1
+    fi
+    PRIMARY_TAGS=("latest" "v${RELEASE_VERSION}")
+    ;;
+  nightly)
+    # Commit-pinned manifest reuses nightly-{x86_64,aarch64} arch images.
+    PRIMARY_TAGS=("nightly")
+    EXTRA_MANIFEST_TAGS=("nightly-${COMMIT}")
+    ;;
+  *)
+    echo "Usage: $0 {release|nightly}"
+    exit 2
+    ;;
+esac
 
 echo "========================================"
-echo "Publishing release images v${RELEASE_VERSION}"
+echo "Publishing ${MODE} images to ${DOCKERHUB_REPO}"
 echo "  Commit: ${COMMIT}"
+echo "  Primary tags: ${PRIMARY_TAGS[*]}"
+if [ ${#EXTRA_MANIFEST_TAGS[@]} -gt 0 ]; then
+  echo "  Extra manifests: ${EXTRA_MANIFEST_TAGS[*]}"
+fi
 echo "========================================"
 
-# Login to ECR to pull staging images
 aws ecr-public get-login-password --region us-east-1 | \
   docker login --username AWS --password-stdin public.ecr.aws/q9t5s3a7
 
-docker pull "${ECR_REPO}:${COMMIT}-x86_64"
-docker pull "${ECR_REPO}:${COMMIT}-aarch64"
+SRC_X86="${ECR_REPO}:${COMMIT}-x86_64"
+SRC_ARM="${ECR_REPO}:${COMMIT}-aarch64"
 
-docker tag "${ECR_REPO}:${COMMIT}-x86_64" "${DOCKERHUB_REPO}:latest-x86_64"
-docker tag "${ECR_REPO}:${COMMIT}-x86_64" "${DOCKERHUB_REPO}:v${RELEASE_VERSION}-x86_64"
-docker push "${DOCKERHUB_REPO}:latest-x86_64"
-docker push "${DOCKERHUB_REPO}:v${RELEASE_VERSION}-x86_64"
+docker pull "${SRC_X86}"
+docker pull "${SRC_ARM}"
 
-docker tag "${ECR_REPO}:${COMMIT}-aarch64" "${DOCKERHUB_REPO}:latest-aarch64"
-docker tag "${ECR_REPO}:${COMMIT}-aarch64" "${DOCKERHUB_REPO}:v${RELEASE_VERSION}-aarch64"
-docker push "${DOCKERHUB_REPO}:latest-aarch64"
-docker push "${DOCKERHUB_REPO}:v${RELEASE_VERSION}-aarch64"
+publish_manifest() {
+  local tag="$1"
+  local arch_tag_base="$2"
+  docker manifest rm "${DOCKERHUB_REPO}:${tag}" || true
+  docker manifest create \
+    "${DOCKERHUB_REPO}:${tag}" \
+    "${DOCKERHUB_REPO}:${arch_tag_base}-x86_64" \
+    "${DOCKERHUB_REPO}:${arch_tag_base}-aarch64"
+  docker manifest push "${DOCKERHUB_REPO}:${tag}"
+}
 
-docker manifest rm "${DOCKERHUB_REPO}:latest" || true
-docker manifest rm "${DOCKERHUB_REPO}:v${RELEASE_VERSION}" || true
-docker manifest create "${DOCKERHUB_REPO}:latest" "${DOCKERHUB_REPO}:latest-x86_64" "${DOCKERHUB_REPO}:latest-aarch64"
-docker manifest create "${DOCKERHUB_REPO}:v${RELEASE_VERSION}" "${DOCKERHUB_REPO}:v${RELEASE_VERSION}-x86_64" "${DOCKERHUB_REPO}:v${RELEASE_VERSION}-aarch64"
-docker manifest push "${DOCKERHUB_REPO}:latest"
-docker manifest push "${DOCKERHUB_REPO}:v${RELEASE_VERSION}"
+for tag in "${PRIMARY_TAGS[@]}"; do
+  docker tag "${SRC_X86}" "${DOCKERHUB_REPO}:${tag}-x86_64"
+  docker tag "${SRC_ARM}" "${DOCKERHUB_REPO}:${tag}-aarch64"
+  docker push "${DOCKERHUB_REPO}:${tag}-x86_64"
+  docker push "${DOCKERHUB_REPO}:${tag}-aarch64"
+  publish_manifest "${tag}" "${tag}"
+done
+
+ARCH_BASE="${PRIMARY_TAGS[0]}"
+for tag in "${EXTRA_MANIFEST_TAGS[@]}"; do
+  publish_manifest "${tag}" "${ARCH_BASE}"
+done
 
 echo ""
-echo "Successfully published release images for v${RELEASE_VERSION}"
+echo "Successfully published ${MODE} images"

.claude/skills/precheck-pr/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: precheck-pr
-description: Self-check your branch before creating a PR — catch dead code, verify accuracy/perf claims, validate PR title format, and confirm merge readiness. Use when the user says "precheck", "self review", "pre-submit check", or "check my PR before I open it." Never posts to GitHub.
+description: Self-check your branch before creating a PR — catch dead code, prevent new model-specific Python examples, verify accuracy/perf claims, validate PR title format, and confirm merge readiness. Use when the user says "precheck", "self review", "pre-submit check", or "check my PR before I open it." Never posts to GitHub.
 ---
 
 # PR Pre-Check
@@ -65,6 +65,8 @@ Ask: "Quick mode or full mode?" Then walk the checklist for the detected PR type
 
 **Also run the Code-Quality sweep on every PR**, regardless of type or mode: the five diff-scoped checks in [references/code-quality.md](references/code-quality.md) — kwargs fragility, broad-except swallow, `Any`/wrong type hints, hot-path `.clone()`/`deepcopy`, and event-loop blocking — plus the advisory conventions (log level, structured logging, synchronization, cleanup, dependencies, naming) in [checklists.md](references/checklists.md). These count only lines the PR *adds* — the pre-existing backlog across the repo is out of scope.
 
+**Also run the Examples-Policy check on every PR** using [references/examples-policy.md](references/examples-policy.md). Inspect only Python paths introduced by the diff. Treat a new model-, checkpoint-, vendor-, or family-specific Python example as blocking; do not report pre-existing example debt.
+
 ### Step 5: Print Report
 
 ```
@@ -77,6 +79,7 @@ Pre-check report for <branch>
   ─────────────────  ──────
   PR title format    ✓
   Code quality       ⚠ 1 broad except, 2 Any hints
+  Examples policy    ✗ new model-specific Python example
   PR desc integrity  ✓
   Registry/config    ✓
   Dead code          ⚠ 2 warnings

.claude/skills/precheck-pr/references/checklists.md

@@ -47,6 +47,19 @@ Diff-scoped sweep for five fragility patterns that are pervasive in the existing
 
 Roll the ⚠/✗ counts into the report as a single **Code quality** dimension row.
 
+---
+
+## All PRs: Examples Policy (run on every PR, quick & full)
+
+Inspect Python files introduced under `examples/` using
+[examples-policy.md](examples-policy.md). This is a diff-scoped ratchet: existing
+model-specific examples may be edited or removed without triggering the check.
+
+- [ ] **No new model-specific Python examples:** the diff adds, copies, or renames no Python file whose path or behavior is specific to one model, checkpoint, vendor, or model family. ✗ for any violation. Route inference through a shared task/protocol entrypoint, model request behavior through `vllm_omni/model_extras`, and commands through task docs or `recipes/`.
+- [ ] **New generic example code is justified:** any new task-neutral Python file under `examples/` is an actual user-facing entrypoint rather than reusable production logic, a benchmark, an app, a setup tool, or a reproducer. ⚠ when the placement is questionable.
+
+Roll the result into the report as a separate **Examples policy** dimension.
+
 ### Conventions (eyeball — no grep)
 
 Judgment calls that don't grep cleanly — apply them while reading the diff, not as a mechanical check:

.claude/skills/precheck-pr/references/examples-policy.md

@@ -0,0 +1,68 @@
+# Examples Python Policy
+
+Prevent new model-specific Python examples without forcing cleanup of the
+existing backlog. Run this check on every PR in quick and full modes.
+
+## Scope
+
+Set the merge base as in the main workflow, then list Python paths introduced
+by the PR, including additions, copies, and renames:
+
+```bash
+BASE="$(git merge-base HEAD origin/main)"
+git diff --name-status --diff-filter=ACR --find-renames --find-copies \
+  "${BASE}"...HEAD -- 'examples/**/*.py'
+```
+
+Inspect destination paths for copies and renames. Existing model-specific files
+that are only modified or deleted are grandfathered and must not be reported.
+
+## Blocking classification
+
+Mark ✗ when a newly introduced Python file does any of the following:
+
+- Names or scopes a path to one model, checkpoint, vendor, or model family.
+- Hard-codes a model identifier, model-specific prompt, request shape, output
+  conversion, or launch configuration behind an otherwise generic filename.
+- Duplicates an existing task/protocol runner to demonstrate one model.
+- Adds a per-model helper below a generic task hub such as `text_to_speech/`.
+
+Do not infer safety from a generic filename alone. For example, a file named
+`text_to_audio.py` is still model-specific if it only implements one model's
+contract.
+
+## Acceptable additions
+
+A new Python example may pass when it is a genuinely model-neutral,
+user-facing task or protocol entrypoint. It must accept model selection through
+configuration and keep model-specific behavior out of the script.
+
+Use ⚠ when the file is model-neutral but reusable logic appears misplaced under
+`examples/`. Route code by purpose:
+
+| Code purpose | Preferred location |
+|---|---|
+| Model prompt, defaults, request/output adaptation | `vllm_omni/model_extras/` or production model modules |
+| Runnable model command and validation evidence | Task documentation or `recipes/` |
+| UI or interactive application | `apps/` |
+| Benchmark or evaluator | `benchmarks/` |
+| Regression reproducer | `tests/` |
+| Download, conversion, or setup utility | `tools/` |
+
+If a model cannot use an existing shared runner, report the missing generic
+capability. Do not solve the gap by adding a model-specific Python example.
+
+## Report format
+
+Add one row to the pre-check report:
+
+```text
+Examples policy    ✓ no new Python example paths
+Examples policy    ⚠ generic helper belongs in tools/
+Examples policy    ✗ examples/offline_inference/new_model/end2end.py is model-specific
+Examples policy    ✗ examples/offline_inference/x_to_y_model_name.py is model-specific
+```
+
+For a blocker, name the path, the model-specific behavior, and the appropriate
+shared runner or destination. Do not propose deleting unrelated existing
+examples as part of the PR.

.claude/skills/review-pr/SKILL.md

@@ -97,6 +97,7 @@ If docs and live code disagree, verify the code/tests and report the drift.
 | [test-quality-evaluation.md](references/checks/test-quality-evaluation.md) | Tests change, are absent for risky code, or may not exercise production behavior. |
 | [tests-docs-checklist.md](references/checks/tests-docs-checklist.md) | Coverage, CI markers, examples, user docs, or PR evidence need review. |
 | [verification.md](references/checks/verification.md) | Hardware, a server, or a runnable affected path is available for active verification. |
+| [examples-policy.md](../precheck-pr/references/examples-policy.md) | The PR adds, copies, or renames Python under `examples/`; apply the canonical policy shared with `precheck-pr`. |
 
 ### Delivery and reviewer coordination
 
@@ -152,6 +153,13 @@ contract they protect or use only the applicable evidence checks.
 Apply every category in [general-checks.md](references/process/general-checks.md) before
 lower-priority comments.
 
+If the diff census contains an added, copied, or renamed Python path under
+`examples/`, read and apply the canonical
+[examples policy](../precheck-pr/references/examples-policy.md). Treat a new
+model-specific Python example as blocking. Do not flag model-specific example
+debt that the PR only modifies or removes, and do not run the rest of the
+author-oriented `precheck-pr` workflow.
+
 For each changed value or behavior, trace:
 
 ```text

.readthedocs.yml

@@ -11,10 +11,15 @@ build:
     post_checkout:
       - git fetch --unshallow || true
     pre_install:
+      # `pre_install` runs before RTD upgrades pip, and the seeded pip 23.1
+      # rejects the `typing_extensions` wheel torch needs (fixed in pip 23.2).
+      - python -m pip install --upgrade pip
       # Pre-install CPU torch so the subsequent `pip install .[docs]` does not
       # pull ~2 GB of CUDA 13 libs (cuBLAS/cuDNN/NCCL/...) that exceed RTD's
-      # 1 GB memory cap and time out the mkdocs build.
-      - python -m pip install --index-url https://download.pytorch.org/whl/cpu torch
+      # 1 GB memory cap and time out the mkdocs build. Wheel-only: `--index-url`
+      # replaces PyPI, so an sdist fallback cannot reach its build deps. The
+      # quotes keep YAML from reading `:all:` as a mapping key.
+      - "python -m pip install --only-binary=:all: --index-url https://download.pytorch.org/whl/cpu torch"
 
 mkdocs:
   configuration: mkdocs.yml

README.md

@@ -16,6 +16,7 @@ Easy, fast, and cheap omni-modality model serving for everyone
 ---
 
 *Latest News* 🔥
+- [2026/08] [VeRL-Omni](https://github.com/verl-project/verl-omni) `v0.2.0` is released: faster diffusion RL powered by vLLM-Omni (request-level/step-wise batching with FA3), rebuilt Qwen3-Omni multimodal training (DPO & GSPO), plus LTX-2.3, Qwen-Image-Edit support and more. See the [release notes](https://github.com/verl-project/verl-omni/releases/tag/v0.2.0).
 - [2026/08] We released [0.26.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.26.0) - aligned with the vLLM 0.26 release line, featuring [MiniMax H3](recipes/MiniMaxAI/MiniMax-H3.md) joint video/audio generation, an experimental full-duplex realtime runtime for [MiniCPM-o 4.5](recipes/OpenBMB/MiniCPM-o-4_5.md), distributed layerwise diffusion offload, and broader model, hardware, streaming, TTS, and quantization support.
 - [2026/07] We released [0.24.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.24.0) - aligned with the vLLM 0.24 release line, expanding production-ready coverage across TTS, speech, diffusion, image/video generation, and robot-policy serving, with major Omni stage runtime refactoring, diffusion request-level batching, async output materialization, quantization/cache/memory improvements, and broad CUDA/ROCm/XPU/NPU support.
 - [2026/06] Starting with [0.14.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.14.0), vLLM-Omni publishes a stable release aligned with every even-numbered upstream vLLM minor version. [0.16.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.16.0), [0.18.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.18.0), [0.20.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.20.0), and [0.22.0](https://github.com/vllm-project/vllm-omni/releases/tag/v0.22.0) continued this cadence, expanding omni and world-model support with [NVIDIA Cosmos3](recipes/cosmos3/Cosmos3-Nano.md) and DreamZero, adding models such as MiniCPM-o 4.5, MOSS-TTS, and Lance, and advancing TTS, diffusion, distributed execution, quantization, RL integration through [VeRL-Omni](https://github.com/verl-project/verl-omni), and CUDA/ROCm/MUSA/NPU/XPU coverage.

benchmarks/diffusion/quantization_quality.py

@@ -158,7 +158,6 @@ def _build_omni_kwargs(args, quantization=None):
 def _generate_image(omni, args, prompt, seed):
     """Generate a single image and return (PIL.Image, time_seconds, memory_gib)."""
     from vllm_omni.inputs.data import OmniDiffusionSamplingParams
-    from vllm_omni.outputs import OmniRequestOutput
     from vllm_omni.platforms import current_omni_platform
 
     generator = torch.Generator(device=current_omni_platform.device_type).manual_seed(seed)
@@ -176,7 +175,7 @@ def _generate_image(omni, args, prompt, seed):
     elapsed = time.perf_counter() - start
     peak_mem = torch.accelerator.max_memory_allocated() / (1024**3)
 
-    req_out = OmniRequestOutput.unwrap_result(outputs)
+    req_out = outputs[0] if isinstance(outputs, list) else outputs
     if not req_out.images:
         raise ValueError("Could not extract image output from result.")
     img = req_out.images[0]
@@ -206,15 +205,15 @@ def _generate_video(omni, args, prompt, seed):
     elapsed = time.perf_counter() - start
     peak_mem = torch.accelerator.max_memory_allocated() / (1024**3)
 
-    first = outputs[0]
-    if hasattr(first, "request_output") and isinstance(first.request_output, list):
-        inner = first.request_output[0]
-        if isinstance(inner, OmniRequestOutput) and hasattr(inner, "images"):
-            frames = inner.images[0] if inner.images else None
-        else:
-            frames = inner
-    elif hasattr(first, "images") and first.images:
-        frames = first.images[0]
+    if isinstance(outputs, list) and isinstance(outputs[0], OmniRequestOutput):
+        first = outputs[0]
+    elif isinstance(outputs, OmniRequestOutput):
+        first = outputs
+    else:
+        raise ValueError("Could not extract video frames from output.")
+
+    if hasattr(first, "images"):
+        frames = first.images[0] if first.images else None
     else:
         raise ValueError("Could not extract video frames from output.")
 

benchmarks/glm_image/vllm-omni/inference.py

@@ -300,7 +300,7 @@ def benchmark(args: argparse.Namespace) -> None:
         output_idx = 0
         for stage_outputs in omni.generate(all_prompts, sampling_params_list, py_generator=True):
             if stage_outputs.final_output_type == "image":
-                request_output = stage_outputs.request_output
+                request_output = stage_outputs
                 request_id = getattr(request_output, "request_id", "")
 
                 images = getattr(request_output, "images", [])

benchmarks/lingbot_video/dense_pipeline_parity.py

@@ -167,9 +167,11 @@ def main() -> None:
     ]
     native_cmd = [
         sys.executable,
-        "examples/offline_inference/text_to_video/text_to_video_lingbot.py",
+        "examples/offline_inference/text_to_video/text_to_video.py",
         "--model",
         args.model,
+        "--model-class-name",
+        "LingBotVideoPipeline",
         "--prompt",
         args.prompt,
         "--output",

docker/Dockerfile.npu

@@ -1,5 +1,5 @@
 ARG VLLM_ASCEND_IMAGE=quay.io/atlas-ci/vllm-ascend
-ARG VLLM_ASCEND_TAG=v0.26.0
+ARG VLLM_ASCEND_TAG=v0.27.0
 FROM ${VLLM_ASCEND_IMAGE}:${VLLM_ASCEND_TAG}
 
 # WORKDIR /vllm-workspace/vllm

docker/Dockerfile.npu.a3

@@ -1,5 +1,5 @@
 ARG VLLM_ASCEND_IMAGE=quay.io/atlas-ci/vllm-ascend
-ARG VLLM_ASCEND_TAG=v0.26.0-a3
+ARG VLLM_ASCEND_TAG=v0.27.0-a3
 FROM ${VLLM_ASCEND_IMAGE}:${VLLM_ASCEND_TAG}
 
 # WORKDIR /vllm-workspace/vllm

docker/Dockerfile.npu.ci

@@ -1,5 +1,5 @@
 ARG VLLM_ASCEND_IMAGE=quay.io/atlas-ci/vllm-ascend
-ARG VLLM_ASCEND_TAG=v0.26.0
+ARG VLLM_ASCEND_TAG=v0.27.0
 FROM ${VLLM_ASCEND_IMAGE}:${VLLM_ASCEND_TAG}
 
 ARG APP_DIR=/vllm-workspace/vllm-omni

docker/Dockerfile.npu.ci.a3

@@ -1,5 +1,5 @@
 ARG VLLM_ASCEND_IMAGE=quay.io/atlas-ci/vllm-ascend
-ARG VLLM_ASCEND_TAG=v0.26.0-a3
+ARG VLLM_ASCEND_TAG=v0.27.0-a3
 FROM ${VLLM_ASCEND_IMAGE}:${VLLM_ASCEND_TAG}
 
 ARG APP_DIR=/vllm-workspace/vllm-omni

docs/.nav.yml

@@ -163,7 +163,8 @@ nav:
 - CLI Reference: cli
 - Community:
   - Governance: community/governance.md
-  - community/*
+  - Contact Us: community/contact_us.md
+  - Community Meetings: community/meetings.md
   - Slack: https://slack.vllm.ai
   - Blog: https://blog.vllm.ai
   - Forum: https://discuss.vllm.ai

docs/community/contact_us.md

@@ -1,5 +1,9 @@
 # Contact Us
 
-- For technical questions and feature requests, please use GitHub [Issues](https://github.com/vllm-project/vllm-omni/issues)
-- For coordinating contributions and development and discussing with other users and developers, please join `sig-omni` channel in our [Slack](https://slack.vllm.ai/) or use the [vLLM Forum](https://discuss.vllm.ai/)
-- For security disclosures, please use GitHub's [Security Advisories](https://github.com/vllm-project/vllm-omni/security/advisories) feature
+- For bugs and feature requests, search or open a GitHub [issue](https://github.com/vllm-project/vllm-omni/issues).
+- For technical and usage questions, join the `sig-omni` channel in [vLLM Slack](https://slack.vllm.ai/) or use the [vLLM Forum](https://discuss.vllm.ai/).
+- For coordinating contributions and development, use `sig-omni`, the forum, or join a [community meeting](meetings.md).
+
+## Security Disclosures
+
+Do not share vulnerability details in public GitHub issues, pull requests, discussions, or Slack channels. To arrange a private report, send a direct message to one of the [lead maintainers](governance.md#lead-maintainers) in [vLLM Slack](https://slack.vllm.ai/). If you cannot send a direct message, you may post a detail-free request in `sig-omni` asking a lead maintainer to contact you privately; do not include any vulnerability details in that request.

docs/community/governance.md

@@ -52,31 +52,11 @@ Committers have write access and merge rights. They typically have deep expertis
 - [@ZJY0516](https://github.com/ZJY0516): Diffusion attention backend, kernel fusion, and CustomOp
 - [@yuanheng-zhao](https://github.com/yuanheng-zhao): Diffusion cache, offload, and Omni Support
 
-## Diffusion Workload Division
+## Reviewer Routing
 
-This section breaks down diffusion-related responsibilities. If you have PRs touching these areas, please ping the listed owners for review.
+For path-based reviewer routing, consult [`.github/CODEOWNERS`](https://github.com/vllm-project/vllm-omni/blob/main/.github/CODEOWNERS). Detailed subsystem boundaries and safe-change guidance live in the [module design documents](../design/index.md#module-design-documents).
 
-### Runtime-related
-
-- Diffusion models: @RuixiangMa, @wtomin, @xuechendi
-
-### Optimization
-
-- Parallel: @RuixiangMa, @wtomin
-- Attention backend: @ZJY0516
-- Cache: @yuanheng-zhao, @RuixiangMa, @SamitHuang
-- Offload: @yuanheng-zhao
-- Intel GPU support: @xuechendi
-- Quantization: @lishunyang12, @david6666666
-- Kernel fusion / communication-computation: @ZJY0516
-
-### Docs & Test
-
-- Diffusion docs: @RuixiangMa, @wtomin
-
-## Meetings
-
-Committers hold **bi-weekly meetings** to discuss future directions and collaborations of the project.
+`CODEOWNERS` is operational routing metadata, not a governance or approval policy. Being listed does not grant committer status or merge rights, and it does not mean every listed reviewer must approve a change. The maintainer roster above is authoritative for project roles and merge rights.
 
 ## Committer Nomination Process
 

docs/community/meetings.md

@@ -0,0 +1,8 @@
+# Community Meetings
+
+vLLM-Omni hosts developer-facing meetings for Chinese- and English-language audiences. Schedules and access details can change, so use these maintained documents as the source of truth:
+
+- [Chinese-language meeting document](https://docs.google.com/document/d/1pdUBiS_7mdOUNDtdwy-9OUf7jsMWN324BIbps5olDME/edit?tab=t.0)
+- [English-language meeting document](https://docs.google.com/document/d/19AlD08T8uJ7wqfs8VtYCi0iGMTwlTYVVlAxFZ3S7OIg/edit?tab=t.0)
+
+Each document contains the current schedule, access details, agendas, and past meeting notes. For broader vLLM community events, see the [vLLM events calendar](https://vllm.ai/events/).

docs/community/meetups.md

@@ -1 +0,0 @@
-# Meetups

docs/community/volunteers.md

@@ -1,12 +0,0 @@
-# Volunteers for Bugfix and CI
-
-We encourage you to check current docs and [issues](https://github.com/vllm-project/vllm-omni/issues) to find possible solutions for your questions. If non of these can solve it, please propose an issue to describe your questions about bug or CI problems for developing.
-
-If you have urgent need for locating and solving bugfix or CI problems, please find community volunteers below.
-
-| Dec 4-Dec 12 | Dec 15-Dec 19 | Dec 22-Dec 26 | Dec 29- Jan 2, 2026| Jan 5-Jan 9 | Jan 12-Jan 16 |
-|----------|----------|----------|----------|----------|----------|
-| <a href="https://github.com/congw729">Conw729</a> | <a href="https://github.com/yinpeiqi">yinpeiqi</a> | <a href="https://github.com/tzhouam">tzhouam</a> | <a href="https://github.com/SamitHuang">SamitHuang</a> | <a href="https://github.com/gcanlin">gcanlin</a> | <a href="https://github.com/natureofnature">natureofnature</a> |
-| <a href="https://github.com/david6666666">david6666666</a> | <a href="https://github.com/R2-Y">R2-Y</a> | <a href="https://github.com/hsliuustc0106">hsliuustc0106</a> | <a href="https://github.com/Gaohan123">Gaohan123</a> | <a href="https://github.com/ZJY0516">ZJY0516</a> | <a href="https://github.com/qibaoyuan">qibaoyuan</a> |
-
-We kindly welcome more contributors to fix bugs and contribute new features!

docs/contributing/README.md

@@ -3,7 +3,7 @@
 Thank you for your interest in contributing to vLLM-Omni! This document provides guidelines and instructions for contributing.
 
 !!! note
-    We host weekly developer-facing online meetings to discuss milestones and updates **every Tuesday at 19:30 PDT**. Meeting link as well as the past meeting notes can be found [here](https://tinyurl.com/vllm-omni-meeting).
+    vLLM-Omni hosts developer-facing meetings for Chinese- and English-language audiences. See [Community Meetings](../community/meetings.md) for current schedules, access details, agendas, and past notes.
 
 ## Getting Started
 
@@ -122,7 +122,7 @@ Repository skills guide the agent, but they do not replace contributor judgment,
 If you encounter a bug or have a feature request, please search existing issues first to see if it has already been reported. If not, please file a new issue, providing as much relevant information as possible.
 
 !!! important
-    If you discover a security vulnerability, please report it by creating a GitHub issue with the `security` label.
+    Do not report suspected security vulnerabilities through a public issue, pull request, discussion, or Slack channel. Follow the [security disclosure instructions](../community/contact_us.md#security-disclosures) to arrange a private report.
 
 ## Pull Requests & Code Reviews
 

docs/design/metrics.md

@@ -1,6 +1,6 @@
 # Prometheus Metrics Design
 
-This document describes how vLLM-Omni exposes Prometheus metrics for multi-stage pipelines, the constraints that shaped the design, and how the pipeline-level metrics coexist with upstream vLLM per-engine metrics. This iteration covers the text and audio surface; diffusion / image / video families land in a follow-up.
+This document describes how vLLM-Omni exposes Prometheus metrics for multi-stage pipelines, the constraints that shaped the design, and how the pipeline-level metrics coexist with upstream vLLM per-engine metrics.
 
 ## Objectives
 

docs/models/supported_models.md

@@ -42,7 +42,8 @@ th {
 | `Wan22VACEPipeline` | Wan2.1-VACE | `Wan-AI/Wan2.1-VACE-1.3B-diffusers`, `Wan-AI/Wan2.1-VACE-14B-diffusers` | ✅︎ | ✅︎ | ✅︎ | ✅︎ | — |
 | `Wan22VACEPipeline` | Wan2.2-VACE | `Pyros13/Wan2.2-VACE-Fun-A14B-Diffusers` | ✅︎ |   |   |   | — |
 | `LTX2Pipeline` | LTX-2 / LTX-2.3 one-stage T2V and I2V | `Lightricks/LTX-2`, `diffusers/LTX-2.3-Diffusers` | ✅︎ | ✅︎ | | | — |
-| `LTX2DistilledPipeline` | LTX-2 distilled two-stage T2V and I2V | `rootonchair/LTX-2-19b-distilled` | ✅︎ | ✅︎ | | | — |
+| `LTX2TwoStagePipeline` | LTX-2 / LTX-2.3 ordinary two-stage T2V and I2V | `Lightricks/LTX-2`, `diffusers/LTX-2.3-Diffusers` + matching Lightricks LoRA and upsampler | ✅︎ | ✅︎ | | | — |
+| `LTX2DistilledPipeline` | LTX-2 / LTX-2.3 full-distilled two-stage T2V and I2V | `rootonchair/LTX-2-19b-distilled`, `diffusers/LTX-2.3-Distilled-Diffusers` + `Lightricks/LTX-2.3` upsampler | ✅︎ | ✅︎ | | | — |
 | `LingBotVideoPipeline` | LingBot-Video dense and MoE T2I, T2V, TI2V | `robbyant/lingbot-video-dense-1.3b`, `robbyant/lingbot-video-moe-30b-a3b` | ✅︎ | | | | — |
 | `MiniMaxH3Pipeline` | MiniMax H3 T2VA, first/last-keyframe FL2VA, and mixed-reference Ref2VA | `MiniMaxAI/MiniMax-H3` | ✅︎ | ✅︎ | | | [Published](https://recipes.vllm.ai/MiniMaxAI/MiniMax-H3) |
 | `DreamZeroPipeline` | DreamZero-DROID | `GEAR-Dreams/DreamZero-DROID` | ✅︎ | ✅︎ | ✅︎ | ✅︎ | — |
@@ -58,6 +59,7 @@ th {
 | `CosyVoice3Model` | CosyVoice3 | `FunAudioLLM/Fun-CosyVoice3-0.5B-2512` | ✅︎ | ✅︎ | | ✅︎ | — |
 | `OmniVoiceModel` | OmniVoice | `k2-fsa/OmniVoice` | ✅︎ | | | | — |
 | `VoxCPM2TalkerForConditionalGeneration` | VoxCPM2 | `openbmb/VoxCPM2` | ✅︎ | | | | — |
+| `DotsTTSForConditionalGeneration` | dots.tts | `rednote-hilab/dots.tts-soar` | ✅︎ | | | | — |
 | `MammothModa2ForConditionalGeneration` | MammothModa2-Preview | `bytedance-research/MammothModa2-Preview` | ✅︎ | ✅︎ | | | — |
 | `MammothModa2ForConditionalGeneration` | MammothModa2-Dev (AR-only image understanding) | `bytedance-research/MammothModa2-Dev` | ✅︎ | | | | — |
 | `Flux2KleinPipeline` | FLUX.2-klein | `black-forest-labs/FLUX.2-klein-4B`, `black-forest-labs/FLUX.2-klein-9B` | ✅︎ | ✅︎ | ✅︎ | ✅︎ | — |

docs/usage/faq.md

@@ -10,12 +10,12 @@ A: Refer to [GPU memory calculation and configuration](../configuration/gpu_memo
 
 > Q: I encounter some bugs or CI problems, which is urgent. How can I solve it?
 
-A: At first, you can check current [issues](https://github.com/vllm-project/vllm-omni/issues) to find possible solutions. If none of these satisfy your demand and it is urgent, please find these [volunteers](https://docs.vllm.ai/projects/vllm-omni/en/latest/community/volunteers/) for help.
+A: Search the current [issues](https://github.com/vllm-project/vllm-omni/issues) first. If no existing issue matches a bug or CI failure, open a [bug report](https://github.com/vllm-project/vllm-omni/issues/new?template=400-bug-report.yml) with a minimal reproducer, environment details, and relevant logs. For technical or usage questions, use the `sig-omni` channel in [vLLM Slack](https://slack.vllm.ai/) or the [vLLM Forum](https://discuss.vllm.ai/).
 
 > Q: Does vLLM-Omni support AWQ or any other quantization?
 
-A: We plan to introduce GGUF FP8 prequantized models and online FP8 quantization in version 0.16.0. Support for other quantization types will follow in future releases. For details, please see our [Q1 quantization roadmap](https://github.com/vllm-project/vllm-omni/issues/1057).
+A: AWQ is available through the inherited vLLM quantization registry, and vLLM-Omni supports several additional methods. Actual support and validation vary by model, component, hardware, and checkpoint. See the [quantization overview](../user_guide/quantization/overview.md) for validated combinations and method-specific guides.
 
 > Q: Does vLLM-Omni support multimodal streaming input and output?
 
-A: Not yet. We already put it on the [Roadmap](https://github.com/vllm-project/vllm-omni/issues/165). Please stay tuned!
+A: Yes, for specific models and serving paths. Current capabilities include [streaming video input](../serving/video_stream_api.md), [streaming diffusion output](../user_guide/diffusion/execution_modes.md#streaming-output), and experimental full-duplex real-time audio described in the [project overview](../README.md). Check the model and API documentation because input and output support is model-specific.

docs/usage/metrics.md

@@ -1,23 +1,23 @@
 # Production Metrics
 
-vLLM-Omni exposes Prometheus metrics via the `/metrics` endpoint on the OpenAI-compatible API server. This page covers the text and audio surface; diffusion / image / video metrics are tracked in a follow-up PR.
+vLLM-Omni exposes Prometheus metrics via the `/metrics` endpoint on the OpenAI-compatible API server.
 
 ```bash
 vllm-omni serve Qwen/Qwen3-Omni-30B-A3B-Instruct --port 8000 --log-stats
 curl http://localhost:8000/metrics
 ```
 
-**`--log-stats` is required to populate metric data.** Without the flag, the endpoint still returns `200 OK` but the upstream `vllm:*` wrap is not registered at all, and the 15 `vllm:omni_*` families are registered as placeholders with no data written to them. This keeps the runtime cost essentially zero for deployments that don't need monitoring. With the flag, all ~80 families populate.
+**`--log-stats` is required to populate metric data.** Without the flag, the endpoint still returns `200 OK` but the upstream `vllm:*` wrap is not registered at all, and the 15 `vllm_omni:*` families are registered as placeholders with no data written to them. This keeps the runtime cost essentially zero for deployments that don't need monitoring. With the flag, all ~80 families populate.
 
 ## Metric Namespaces
 
 | Prefix | Source | Present when |
 |--------|--------|--------------|
-| `vllm:omni_` | vLLM-Omni orchestrator / audio modality / cross-stage transfer | Pipeline-dependent |
+| `vllm_omni:` | vLLM-Omni orchestrator / audio modality / cross-stage transfer | Pipeline-dependent |
 | `vllm:` | Upstream vLLM engine, wrapped by `OmniPrometheusStatLogger` to expose `{stage, replica}` | Pipeline includes an LLM (AR) stage |
 | `http_` / `process_` | Uvicorn / Python runtime | Always |
 
-## Pipeline-Level Metrics (`vllm:omni_`)
+## Pipeline-Level Metrics (`vllm_omni:`)
 
 Defined in `vllm_omni/metrics/prometheus.py`. Track request lifecycle across the full multi-stage pipeline.
 
@@ -25,42 +25,66 @@ Defined in `vllm_omni/metrics/prometheus.py`. Track request lifecycle across the
 
 | Metric | Type | Labels | Description |
 |--------|------|--------|-------------|
-| `vllm:omni_num_requests_running` | Gauge | `model_name` | Pipeline-global in-flight requests (dispatched to engine, not yet finalized) |
-| `vllm:omni_num_requests_waiting` | Gauge | `model_name` | Requests waiting in the Orchestrator queue |
-| `vllm:omni_requests_success_total` | Counter | `model_name`, `finished_reason` | Total requests by completion reason. `finished_reason` ∈ {`stop`, `length`, `abort`, ...} mirroring upstream `vllm:request_success_total`; aborts cover client disconnect / cancellation paths in addition to upstream `FinishReason.ABORT` |
+| `vllm_omni:num_requests_running` | Gauge | `model_name` | Pipeline-global in-flight requests (dispatched to engine, not yet finalized) |
+| `vllm_omni:num_requests_waiting` | Gauge | `model_name` | Requests waiting in the Orchestrator queue |
+| `vllm_omni:requests_success_total` | Counter | `model_name`, `finished_reason` | Total requests by completion reason. `finished_reason` ∈ {`stop`, `length`, `abort`, ...} mirroring upstream `vllm:request_success_total`; aborts cover client disconnect / cancellation paths in addition to upstream `FinishReason.ABORT` |
 
 ### Latency
 
 | Metric | Type | Labels | Description |
 |--------|------|--------|-------------|
-| `vllm:omni_e2e_request_latency_s` | Histogram | `model_name` | Pipeline-global end-to-end request latency in seconds |
+| `vllm_omni:e2e_request_latency_s` | Histogram | `model_name` | Pipeline-global end-to-end request latency in seconds |
 
-## Audio Modality Metrics (`vllm:omni_`)
+## Audio Modality Metrics (`vllm_omni:`)
 
 Emitted at request finalize, except for `audio_ttfp_s` (streaming-hook at the first audio packet) and `audio_underrun_s` / `audio_continuity_ok_total` (streaming finalize, after the chunk stream is exhausted). All carry `{model_name, stage, replica}` plus the listed extra label.
 
 | Metric | Type | Extra label | Description |
 |--------|------|-------------|-------------|
-| `vllm:omni_audio_ttfp_s` | Histogram | — | Time from request arrival to first audio packet/frame |
-| `vllm:omni_audio_duration_s` | Histogram | — | Audio content duration (`audio_frames / sample_rate`) |
-| `vllm:omni_audio_rtf` | Histogram | — | Real-time factor (`stage_gen_time_s / audio_duration_s`); streaming TTS SLO red line `< 1`; uses `RTF_BUCKETS` |
-| `vllm:omni_audio_frames_total` | Counter | — | Cumulative audio frame count; throughput via `rate()` |
-| `vllm:omni_audio_underrun_s` | Histogram | — | Per-request worst-case player deficit; `> 0` indicates listener heard silent gaps |
-| `vllm:omni_audio_continuity_ok_total` | Counter | `threshold_ms` | Incremented when the request's worst underrun stayed below `threshold_ms` |
-| `vllm:omni_audio_skipped_requests_total` | Counter | `reason` | Silent-loss counter — code2wav rejected malformed codec input and returned `200 OK` with empty audio |
+| `vllm_omni:audio_ttfp_s` | Histogram | — | Time from request arrival to first audio packet/frame |
+| `vllm_omni:audio_duration_s` | Histogram | — | Audio content duration (`audio_frames / sample_rate`) |
+| `vllm_omni:audio_rtf` | Histogram | — | Real-time factor (`stage_gen_time_s / audio_duration_s`); streaming TTS SLO red line `< 1`; uses `RTF_BUCKETS` |
+| `vllm_omni:audio_frames_total` | Counter | — | Cumulative audio frame count; throughput via `rate()` |
+| `vllm_omni:audio_underrun_s` | Histogram | — | Per-request worst-case player deficit; `> 0` indicates listener heard silent gaps |
+| `vllm_omni:audio_continuity_ok_total` | Counter | `threshold_ms` | Incremented when the request's worst underrun stayed below `threshold_ms` |
+| `vllm_omni:audio_skipped_requests_total` | Counter | `reason` | Silent-loss counter — code2wav rejected malformed codec input and returned `200 OK` with empty audio |
 
 The continuity math comes from `vllm_omni/benchmarks/audio_continuity.py::compute_continuity_stats` so the server-side observation aligns with the bench-side definition.
 
-## Cross-Stage Transfer Metrics (`vllm:omni_`)
+## Diffusion Metrics (`vllm_omni:`)
+
+Per-request timing breakdowns for diffusion (image/video) stages. Emitted at request finalize when `stage_metrics.diffusion_metrics` is present. All carry `{model_name, stage, replica}`.
+
+| Metric | Type | Description |
+|--------|------|-------------|
+| `vllm_omni:diffusion_exec_s` | Histogram | DiT forward pass execution time per request in seconds |
+| `vllm_omni:diffusion_exec_per_step_s` | Histogram | DiT forward pass execution time per denoising step in seconds (`exec_s / num_inference_steps`) |
+| `vllm_omni:diffusion_preprocess_s` | Histogram | Diffusion input preprocessing time per request in seconds |
+| `vllm_omni:diffusion_postprocess_s` | Histogram | Diffusion output postprocessing (VAE decode) time per request in seconds |
+
+`diffusion_exec_s` uses `SECONDS_BUCKETS` (50 ms → 300 s); the other three use `SECONDS_FAST_BUCKETS` (1 ms → 60 s). `diffusion_exec_per_step_s` is skipped when `num_inference_steps` is not set.
+
+### Example PromQL
+
+```promql
+# P99 DiT exec time by stage
+histogram_quantile(0.99, rate(vllm_omni:diffusion_exec_s_bucket[5m]))
+
+# Ratio of preprocess to total exec wall time
+rate(vllm_omni:diffusion_preprocess_s_sum[5m])
+  / rate(vllm_omni:diffusion_exec_s_sum[5m])
+```
+
+## Cross-Stage Transfer Metrics (`vllm_omni:`)
 
 Per-physical-transfer histograms tracking the data hop between adjacent stages. Labels `{model_name, from_stage, from_replica, to_stage, to_replica}` let dashboards attribute latency to specific replica edges. `from_replica` / `to_replica` are resolved from the orchestrator's sticky-routing binding (`stage_pool.get_bound_replica_id(request_id)`), so no extra plumbing through `TransferEdgeStats` is needed.
 
 | Metric | Type | Description |
 |--------|------|-------------|
-| `vllm:omni_transfer_size_bytes` | Histogram | Per-transfer payload size in bytes |
-| `vllm:omni_transfer_tx_s` | Histogram | Sender-side time (serialize + submit to connector) |
-| `vllm:omni_transfer_rx_s` | Histogram | Receiver-side time (recv + deserialize) |
-| `vllm:omni_transfer_in_flight_s` | Histogram | Network in-flight time (TX done → RX recv start) |
+| `vllm_omni:transfer_size_bytes` | Histogram | Per-transfer payload size in bytes |
+| `vllm_omni:transfer_tx_s` | Histogram | Sender-side time (serialize + submit to connector) |
+| `vllm_omni:transfer_rx_s` | Histogram | Receiver-side time (recv + deserialize) |
+| `vllm_omni:transfer_in_flight_s` | Histogram | Network in-flight time (TX done → RX recv start) |
 
 ## vLLM Engine Metrics (`vllm:`)
 
@@ -83,9 +107,9 @@ For the full list of upstream metrics, see [the vLLM docs](https://github.com/vl
 
 | Metric group | Multi-stage LLM (Qwen3-Omni) |
 |---|---|
-| `vllm:omni_` request tracking + latency | With `--log-stats` |
-| `vllm:omni_` audio modality | With `--log-stats`, if pipeline has a talker stage |
-| `vllm:omni_` transfer | With `--log-stats`, if pipeline has ≥ 2 stages |
+| `vllm_omni:` request tracking + latency | With `--log-stats` |
+| `vllm_omni:` audio modality | With `--log-stats`, if pipeline has a talker stage |
+| `vllm_omni:` transfer | With `--log-stats`, if pipeline has ≥ 2 stages |
 | `vllm:` engine metrics (per `(stage, replica)`) | With `--log-stats` |
 | `vllm:` MFU metrics | With `--log-stats --enable-mfu-metrics` |
 
@@ -94,5 +118,5 @@ For the full list of upstream metrics, see [the vLLM docs](https://github.com/vl
 - All time-bearing metrics use the `_s` suffix (values in seconds). Buckets are `SECONDS_BUCKETS` for e2e / generation-style values and `SECONDS_FAST_BUCKETS` (1 ms → 60 s) for the fine-grained transfer and audio-underrun values.
 - Counters use the `_total` suffix (auto-appended by `prometheus_client`).
 - Sizes use the `_bytes` suffix.
-- All omni-specific families are prefixed `vllm:omni_`. The upstream `unregister_vllm_metrics()` function is monkey-patched (see `vllm_omni/patch.py`) to a scoped version that still strips upstream `vllm:*` collectors so multi-engine init within one process does not crash on duplicate registration, but preserves anything prefixed `vllm:omni_` / `vllm_omni`.
-- Text and audio first-output use distinct families (`vllm:time_to_first_token_seconds` reused from upstream for text; `vllm:omni_audio_ttfp_s` for audio) rather than a single metric with a `modality` label.
+- All omni-specific families are prefixed `vllm_omni:`. The upstream `unregister_vllm_metrics()` function is monkey-patched (see `vllm_omni/patch.py`) to a scoped version that still strips upstream `vllm:*` collectors so multi-engine init within one process does not crash on duplicate registration, but preserves anything prefixed `vllm_omni:`.
+- Text and audio first-output use distinct families (`vllm:time_to_first_token_seconds` reused from upstream for text; `vllm_omni:audio_ttfp_s` for audio) rather than a single metric with a `modality` label.

docs/user_guide/examples/offline_inference/text_to_video.md

@@ -12,6 +12,7 @@ For backend selection and SageAttention usage, see the [Diffusion Attention Back
 | Model | Default Resolution | Default Frames | Default Steps | Guidance | VRAM (BF16) |
 |---|---|---|---|---|---|
 | `Wan-AI/Wan2.2-T2V-A14B-Diffusers` | 720x1280 | 81 | 40 | 4.0 | ~60 GiB |
+| `robbyant/lingbot-video-dense-1.3b` / `robbyant/lingbot-video-moe-30b-a3b` | 192x320 | 9 | 2 | 3.0 | ~68 GiB (MoE smoke) |
 | `Lightricks/LTX-2` | 512x768 | 121 | 40 | video 3.0 / audio 7.0 | Model-dependent |
 | `hunyuanvideo-community/HunyuanVideo-1.5-Diffusers-480p_t2v` | 480x832 | 121 | 50 | 6.0 | 1×A100 80GB |
 | `hunyuanvideo-community/HunyuanVideo-1.5-Diffusers-720p_t2v` | 720x1280 | 121 | 50 | 6.0 | FP8 + VAE tiling required |
@@ -35,6 +36,25 @@ python text_to_video.py \
   --output t2v_out.mp4
 ```
 
+### LingBot-Video
+
+The shared runner recognizes both official LingBot checkpoint IDs and selects
+the native `LingBotVideoPipeline` automatically:
+
+```bash
+python text_to_video.py \
+  --model robbyant/lingbot-video-dense-1.3b \
+  --prompt "a robotic arm picks up a red block" \
+  --height 192 --width 320 --num-frames 9 --num-inference-steps 2 \
+  --guidance-scale 3.0 --flow-shift 3.0 --fps 24 \
+  --output lingbot_t2v.mp4
+```
+
+Use `robbyant/lingbot-video-moe-30b-a3b` for the MoE checkpoint. For local
+paths without `lingbot` in the directory name, add
+`--model-class-name LingBotVideoPipeline`. Model-only options use
+`--extra-body`, for example `'{"batch_cfg": true, "output_type": "np"}'`.
+
 ### LTX-2
 
 ```bash

docs/user_guide/quantization/fp8.md

@@ -80,12 +80,14 @@ warmup_quack_fp8([(14040, 2048, 6144), (14040, 2048, 2048)])
 
 ## Model Type Support
 
-### Diffusion Model (Qwen-Image, Wan2.2)
+### Diffusion Models
 
 | Model | HF models | Online | Pre-calibrated | Recommendation | `ignored_layers` | Text-Encoder quantization |
 |-------|-----------|:-------:|:------:|----------------|------------------|------------------|
 | Qwen-Image | `Qwen/Qwen-Image`, `Qwen/Qwen-Image-2512` | Yes | Yes | Skip sensitive image-stream MLPs when quality regresses | `img_mlp` | |
 | Wan2.2 | Wan2.2 diffusion pipelines | Not validated | Not validated | Validate against BF16 before documenting as supported | TBD | |
+| LTX-2 | `Lightricks/LTX-2`, `rootonchair/LTX-2-19b-distilled` | Yes | Not validated | Transformer only; use dynamic phase LoRA for ordinary two-stage | None | |
+| LTX-2.3 | `diffusers/LTX-2.3-Diffusers`, `diffusers/LTX-2.3-Distilled-Diffusers` | Yes | Not validated | Transformer only; use dynamic phase LoRA for ordinary two-stage | None | |
 | Z-Image | `Tongyi-MAI/Z-Image-Turbo` | Yes | Yes | All layers | None | ✅︎ |
 | FLUX.1 | `black-forest-labs/FLUX.1-dev`, `black-forest-labs/FLUX.1-schnell` | Yes | Yes | All layers | None | |
 | FLUX.2-dev | `black-forest-labs/FLUX.2-dev` | Yes | Not validated | All layers | None | ✅︎ |

docs/user_guide/quantization/overview.md

@@ -12,20 +12,20 @@ For the internal architecture and backend extension points, see the
 
 | Mode | Guide | Description | Methods |
 |------|-------|-------------|---------|
-| Online quantization | [Online Quantization](online.md) | vLLM-Omni computes quantized weights and scales while loading the model. | FP8 W8A8, Int8 W8A8, MXFP8 W8A8, MXFP4 W4A4 |
+| Online quantization | [Online Quantization](online.md) | vLLM-Omni computes quantized weights and scales while loading the model. | FP8 W8A8, Int8 W8A8, BitsAndBytes W4, MXFP8 W8A8, MXFP4 W4A4 |
 | Runtime attention quantization | [Quantized KV Cache](quantized_kvcache.md) | vLLM-Omni dynamically quantizes eligible diffusion Flash Attention tensors during inference. | FP8 FA |
-| Pre-quantized checkpoints | Method-specific guides | The checkpoint or an offline quantizer provides quantized weights and scales before serving. | ModelOpt, GGUF, AutoRound, msModelSlim, serialized Int8, offline MXFP8, offline MXFP4 DualScale |
+| Pre-quantized checkpoints | Method-specific guides | The checkpoint or an offline quantizer provides quantized weights and scales before serving. | ModelOpt, AutoRound, msModelSlim, serialized Int8, offline MXFP8, offline MXFP4 DualScale |
 
 ## Hardware Support
 
-| Device | FP8 W8A8 | Int8 W8A8 | ModelOpt | MXFP8 W8A8 | MXFP4 W4A4 | GGUF | AutoRound | msModelSlim |
-|--------|----------|-----------|----------|------------|------------|------|-----------|-------------|
-| NVIDIA Blackwell GPU (SM 100+) | ✅ | ✅ | ✅ | ⭕ | ⭕ | ✅ | ✅ | ❌ |
-| NVIDIA Ada/Hopper GPU (SM 89+) | ✅ | ✅ | ✅ | ⭕ | ⭕ | ✅ | ✅ | ❌ |
-| NVIDIA Ampere GPU (SM 80+) | ✅ | ✅ | ⭕ | ⭕ | ⭕ | ✅ | ✅ | ❌ |
-| AMD ROCm | ⭕ | ⭕ | ⭕ | ⭕ | ✅ | ⭕ | ⭕ | ❌ |
-| Intel XPU | ⭕ | ⭕ | ⭕ | ⭕ | ⭕ | ⭕ | ✅ | ❌ |
-| Ascend NPU | ❌ | ✅ | ❌ | ✅ | ✅ | ❌ | ❌ | ✅ |
+| Device | FP8 W8A8 | Int8 W8A8 | BitsAndBytes W4 | ModelOpt | MXFP8 W8A8 | MXFP4 W4A4 | AutoRound | msModelSlim |
+|--------|----------|-----------|------------------|----------|------------|------------|-----------|-------------|
+| NVIDIA Blackwell GPU (SM 100+) | ✅ | ✅ | ✅ | ✅ | ⭕ | ⭕ | ✅ | ❌ |
+| NVIDIA Ada/Hopper GPU (SM 89+) | ✅ | ✅ | ✅ | ✅ | ⭕ | ⭕ | ✅ | ❌ |
+| NVIDIA Ampere GPU (SM 80+) | ✅ | ✅ | ✅ | ⭕ | ⭕ | ⭕ | ✅ | ❌ |
+| AMD ROCm | ⭕ | ⭕ | ❌ | ⭕ | ⭕ | ✅ | ⭕ | ❌ |
+| Intel XPU | ⭕ | ⭕ | ❌ | ⭕ | ⭕ | ⭕ | ✅ | ❌ |
+| Ascend NPU | ❌ | ✅ | ❌ | ❌ | ✅ | ✅ | ❌ | ✅ |
 
 Legend: `✅` supported, `❌` unsupported, `⭕` not verified in this
 guide. FP8 on Ampere may use a weight-only path where available.
@@ -43,10 +43,10 @@ otherwise.
 |--------|-------|------|----------------|--------|
 | FP8 W8A8 | [FP8](fp8.md) | Online W8A8 or checkpoint FP8 | Qwen-Image; Wan2.2 is not validated | Validated for Qwen-Image family and other DiT models |
 | Int8 W8A8 | [Int8](int8.md) | Online or serialized W8A8 | Qwen-Image; Wan2.2 is not validated | Validated for Qwen-Image and Z-Image |
+| BitsAndBytes W4 | [BitsAndBytes](bitsandbytes.md) | Online W4 weight-only | Z-Image-Turbo; Qwen-Image/Wan2.2 not validated | Validated for Z-Image-Turbo |
 | ModelOpt | [ModelOpt](modelopt.md) | Pre-quantized FP8 checkpoints | Qwen-Image, Z-Image, FLUX.2, HunyuanImage-3.0 | Validated for ModelOpt FP8 diffusion checkpoints |
 | MXFP8 W8A8 | [MXFP8](mxfp8.md) | Online W8A8 or offline pre-quantized | Wan2.2-T2V-A14B, I2V-A14B, TI2V-5B | Ascend NPU only; validated for Wan2.2 |
 | MXFP4 W4A4 | [MXFP4](mxfp4.md) | `mxfp4`: online single-scale only; `mxfp4_dualscale`: online or offline dual-scale (offline recommended) | Wan2.2-T2V-A14B, I2V-A14B | Ascend NPU only; validated for Wan2.2 A14B cascade models; TI2V-5B not supported; offline `mxfp4_dualscale` uses calibrated `mul_scale` for best accuracy |
-| GGUF | [GGUF](gguf.md) | Pre-quantized transformer weights | Qwen-Image | Validated where a model-specific GGUF adapter exists |
 | AutoRound | [AutoRound](autoround.md) | Pre-quantized W4A16 checkpoints | FLUX.1-dev; Qwen-Image/Wan2.2 not validated | Checkpoint-driven |
 | msModelSlim | [msModelSlim](msmodelslim.md) | Pre-quantized Ascend checkpoints | Wan2.2 recipe; HunyuanImage-3.0 inference target | Ascend/NPU path |
 
@@ -61,9 +61,9 @@ in BF16 unless the model guide explicitly adds support.
 |--------|-------|-------|----------------|--------|
 | ModelOpt | [ModelOpt](modelopt.md) | Thinker or language-model checkpoint config | Qwen3-Omni thinker | ModelOpt checkpoint path |
 | Int8 | [Int8](int8.md) | Not currently validated for omni/TTS stages | Qwen3-Omni, Qwen3-TTS | Not validated |
+| BitsAndBytes | [BitsAndBytes](bitsandbytes.md) | Not currently validated for omni/TTS stages | Qwen3-Omni, Qwen3-TTS | Not validated |
 | MXFP8 | [MXFP8](mxfp8.md) | Not currently validated for omni/TTS stages | Qwen3-Omni, Qwen3-TTS | Not validated |
 | MXFP4 | [MXFP4](mxfp4.md) | Not currently validated for omni/TTS stages | Qwen3-Omni, Qwen3-TTS | Not validated |
-| GGUF | [GGUF](gguf.md) | Not currently validated for omni/TTS stages | Qwen3-Omni, Qwen3-TTS | Not validated |
 | AutoRound | [AutoRound](autoround.md) | Thinker or language-model checkpoint config | Qwen2.5-Omni, Qwen3-Omni | Supported through AutoRound checkpoints |
 | msModelSlim | [msModelSlim](msmodelslim.md) | Not currently validated for omni/TTS stages | Qwen3-Omni, Qwen3-TTS | Not validated |
 
@@ -76,10 +76,10 @@ attached to the intended stage rather than applied globally.
 |--------|-------|-------|----------------|--------|
 | FP8 | [FP8](fp8.md) | Stage-specific DiT or transformer module | BAGEL, GLM-Image | Requires model-specific validation |
 | Int8 | [Int8](int8.md) | Stage-specific DiT or transformer module | BAGEL, GLM-Image | Requires model-specific validation |
+| BitsAndBytes | [BitsAndBytes](bitsandbytes.md) | Stage-specific transformer or DiT module | BAGEL, GLM-Image | Not validated |
 | ModelOpt | [ModelOpt](modelopt.md) | Checkpoint-defined diffusion stage | BAGEL, GLM-Image | Requires model-specific validation |
 | MXFP8 | [MXFP8](mxfp8.md) | Stage-specific DiT or transformer module | BAGEL, GLM-Image | Not validated |
 | MXFP4 | [MXFP4](mxfp4.md) | Stage-specific DiT or transformer module | BAGEL, GLM-Image | Not validated |
-| GGUF | [GGUF](gguf.md) | Stage-specific transformer weights | BAGEL, GLM-Image | No validated adapter listed |
 | AutoRound | [AutoRound](autoround.md) | Checkpoint-defined stage | BAGEL, GLM-Image | No validated checkpoint listed |
 | msModelSlim | [msModelSlim](msmodelslim.md) | Ascend-generated stage weights | GLM-Image | Requires model-specific adaptation |
 
@@ -106,7 +106,7 @@ config = build_quant_config({
 
 | Component | Default quantized? | Notes |
 |-----------|--------------------|-------|
-| Diffusion transformer | Yes | Primary target for FP8, Int8, ModelOpt, MXFP8, MXFP4, GGUF, AutoRound, and msModelSlim |
+| Diffusion transformer | Yes | Primary target for FP8, Int8, BitsAndBytes, ModelOpt, MXFP8, MXFP4, AutoRound, and msModelSlim |
 | Text encoder | No | Keep BF16 unless a method-specific guide documents support |
 | VAE | No | Keep BF16; storage-only paths are method-specific |
 | Scheduler/tokenizer | No | Loaded from the base model repository |
@@ -139,8 +139,8 @@ from vllm_omni.quantization import build_quant_config
 
 build_quant_config("fp8")
 build_quant_config({"method": "fp8", "activation_scheme": "static"})
+build_quant_config("bitsandbytes")
 build_quant_config("auto-round", bits=4, group_size=128)
-build_quant_config({"method": "gguf", "gguf_model": "/path/to/model.gguf"})
 build_quant_config({"transformer": {"method": "fp8"}, "vae": None})
 build_quant_config(None)
 ```

examples/offline_inference/aura_omni/end2end.py

@@ -131,7 +131,7 @@ def build_sampling_params() -> list[SamplingParams]:
 
 
 def save_stage_output(stage_outputs, output_dir: str) -> None:
-    output = stage_outputs.request_output
+    output = stage_outputs
     request_id = output.request_id
     if stage_outputs.final_output_type == "text":
         text_output = output.outputs[0].text

examples/offline_inference/covo_audio/end2end.py

@@ -59,7 +59,7 @@ def main(args):
 
     omni = Omni(
         model=args.model_name,
-        stage_configs_path=args.stage_configs_path,
+        deploy_config=args.deploy_config,
         log_stats=args.log_stats,
         stage_init_timeout=args.stage_init_timeout,
         batch_timeout=args.batch_timeout,
@@ -104,7 +104,7 @@ def main(args):
     os.makedirs(output_dir, exist_ok=True)
 
     for stage_outputs in omni_outputs:
-        output = stage_outputs.request_output
+        output = stage_outputs
         if stage_outputs.final_output_type == "text":
             request_id = output.request_id
             text_output = output.outputs[0].text
@@ -167,10 +167,10 @@ def parse_args():
         help="Sampling rate for audio loading (default: 16000).",
     )
     parser.add_argument(
-        "--stage-configs-path",
+        "--deploy-config",
         type=str,
         default=None,
-        help="Path to stage configs YAML file.",
+        help="Path to a deploy config YAML file.",
     )
     parser.add_argument(
         "--log-stats",

examples/offline_inference/custom_pipeline/image_to_image/image_edit.py

@@ -228,7 +228,7 @@ async def main():
     if not outputs:
         raise ValueError("No output produced from omni.generate()")
 
-    first_out = outputs[0].request_output
+    first_out = outputs[0]
     req_out: OmniRequestOutput = first_out
 
     # Verify trajectory data (from custom pipeline)

examples/offline_inference/dynin_omni/end2end.py

@@ -741,7 +741,7 @@ def make_mmu_prompt(
 
 def iter_mm_outputs(outputs: list[Any]):
     for omni_out in outputs:
-        req_out = getattr(omni_out, "request_output", None)
+        req_out = omni_out
         req_list = req_out if isinstance(req_out, list) else [req_out]
         for item in req_list:
             if item is None:
@@ -876,7 +876,7 @@ def parse_args(repo_root: Path) -> argparse.Namespace:
     parser.add_argument("--task", type=str, required=True, choices=TASK_CHOICES)
     parser.add_argument("--model", type=str, required=True, help="HF repo id or local model directory.")
     parser.add_argument(
-        "--stage-config-path",
+        "--deploy-config",
         type=str,
         default=str(repo_root / "vllm_omni/deploy/dynin_omni.yaml"),
         help="Path to deploy config yaml.",
@@ -1394,8 +1394,8 @@ def main() -> None:
 
     from vllm_omni.entrypoints.omni import Omni
 
-    stage_config_path = str(Path(args.stage_config_path).expanduser())
-    omni = Omni(model=model_source, stage_configs_path=stage_config_path, dtype=args.dtype)
+    deploy_config_path = str(Path(args.deploy_config).expanduser())
+    omni = Omni(model=model_source, deploy_config=deploy_config_path, dtype=args.dtype)
     sampling_params_list = [
         SamplingParams(max_tokens=int(args.max_tokens_per_stage), temperature=0.0, top_p=1.0, detokenize=False)
         for _ in range(omni.num_stages)

examples/offline_inference/hunyuan_image3/end2end.py

@@ -73,7 +73,6 @@ def parse_args():
     )
     parser.add_argument("--sys-type", type=str, default=None, help="Override system prompt type.")
     parser.add_argument("--deploy-config", type=str, default=None, help="Custom deploy YAML path.")
-    parser.add_argument("--stage-configs-path", type=str, default=None, help="Custom legacy stage config YAML path.")
     parser.add_argument(
         "--stream",
         action="store_true",
@@ -146,13 +145,7 @@ def main():
     else:
         bot_task = args.bot_task
 
-    if args.deploy_config is not None and args.stage_configs_path is not None:
-        raise ValueError("--deploy-config and --stage-configs-path are mutually exclusive.")
-
-    deploy_config = args.deploy_config
-    stage_configs_path = args.stage_configs_path
-    if deploy_config is None and stage_configs_path is None:
-        deploy_config = _MODALITY_DEFAULT_DEPLOY_CONFIG[args.modality]
+    deploy_config = args.deploy_config or _MODALITY_DEFAULT_DEPLOY_CONFIG[args.modality]
 
     omni_kwargs = {
         "model": args.model,
@@ -168,10 +161,7 @@ def main():
 
     if additional_config is not None:
         omni_kwargs["additional_config"] = additional_config
-    if deploy_config is not None:
-        omni_kwargs["deploy_config"] = deploy_config
-    else:
-        omni_kwargs["stage_configs_path"] = stage_configs_path
+    omni_kwargs["deploy_config"] = deploy_config
 
     omni = Omni(**omni_kwargs)
 
@@ -272,10 +262,7 @@ def main():
     print(f"  Modality: {args.modality}")
     print(f"  Prompt task: {task}")
     print(f"  Bot task: {bot_task}")
-    if deploy_config is not None:
-        print(f"  Deploy config: {deploy_config}")
-    else:
-        print(f"  Stage config: {stage_configs_path}")
+    print(f"  Deploy config: {deploy_config}")
     print(f"  Num stages: {omni.num_stages}")
     if args.modality in ("text2img", "img2img"):
         print(f"  Inference steps: {args.steps}")
@@ -303,7 +290,7 @@ def main():
     )
     img_idx = 0
     for req_output in omni_outputs:
-        ro = getattr(req_output, "request_output", None)
+        ro = req_output
         stage_id = getattr(req_output, "stage_id", None)
 
         # AR stage text — each CompletionOutput.text is already a delta when

examples/offline_inference/image_to_image/image_edit.py

@@ -621,7 +621,7 @@ def main():
         images = getattr(output, "images", None)
         if images:
             break
-        req_out = getattr(output, "request_output", None)
+        req_out = output
         images = getattr(req_out, "images", None) if req_out is not None else None
         if images:
             break

examples/offline_inference/image_to_video/image_to_video.py

@@ -646,8 +646,8 @@ def main():
         if frames.multimodal_output and "audio" in frames.multimodal_output:
             audio = frames.multimodal_output["audio"]
             audio_sample_rate = frames.multimodal_output.get("audio_sample_rate", audio_sample_rate)
-        if frames.is_pipeline_output and frames.request_output is not None:
-            inner_output = frames.request_output
+        if frames.is_pipeline_output and frames is not None:
+            inner_output = frames
             if isinstance(inner_output, OmniRequestOutput):
                 if inner_output.multimodal_output and "audio" in inner_output.multimodal_output:
                     audio = inner_output.multimodal_output["audio"]

examples/offline_inference/mammothmodal2_preview/run_mammothmoda2_image_summarize.py

@@ -0,0 +1,117 @@
+"""
+Offline inference example: MammothModa2 image summarization (single AR stage).
+
+Example:
+  uv run python examples/offline_inference/mammothmodal2_preview/run_mammothmoda2_image_summarize.py \
+    --model path/to/MammothModa2-Preview \
+    --deploy-config vllm_omni/deploy/mammoth_moda2_ar.yaml \
+    --image /path/to/input.jpg \
+    --question "Please summarize the content of this image."
+"""
+
+from __future__ import annotations
+
+import argparse
+import os
+
+from PIL import Image
+from vllm import SamplingParams
+from vllm.multimodal.image import convert_image_mode
+
+from vllm_omni import Omni
+
+DEFAULT_SYSTEM = "You are a helpful assistant."
+DEFAULT_QUESTION = "Please summarize the content of this image."
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="MammothModa2 image summarization (offline, AR only).")
+    parser.add_argument("--model", type=str, required=True, help="Path to model directory or model id.")
+    parser.add_argument("--deploy-config", type=str, required=True, help="Path to deploy config yaml.")
+    parser.add_argument("--image", type=str, required=True, help="Path to input image.")
+    parser.add_argument("--question", type=str, default=DEFAULT_QUESTION, help="Question/instruction for the model.")
+    parser.add_argument("--system", type=str, default=DEFAULT_SYSTEM, help="System prompt.")
+    parser.add_argument(
+        "--max-tokens",
+        type=int,
+        default=512,
+        help="Max new tokens to generate.",
+    )
+    parser.add_argument("--temperature", type=float, default=0.2)
+    parser.add_argument("--top-p", type=float, default=0.9)
+    parser.add_argument("--seed", type=int, default=42)
+    parser.add_argument("--trust-remote-code", action="store_true")
+    parser.add_argument(
+        "--enable-diffusion-pipeline-profiler",
+        action="store_true",
+        help="Enable diffusion pipeline profiler to display stage durations.",
+    )
+    return parser.parse_args()
+
+
+def build_prompt(system: str, question: str) -> str:
+    return (
+        f"<|im_start|>system\n{system}<|im_end|>\n"
+        "<|im_start|>user\n"
+        "<|vision_start|><|image_pad|><|vision_end|>"
+        f"{question}<|im_end|>\n"
+        "<|im_start|>assistant\n"
+    )
+
+
+def main() -> None:
+    args = parse_args()
+
+    if not os.path.exists(args.image):
+        raise FileNotFoundError(f"Image file not found: {args.image}")
+
+    pil_image = Image.open(args.image)
+    image_data = convert_image_mode(pil_image, "RGB")
+    prompt = build_prompt(args.system, args.question)
+
+    omni = Omni(
+        model=args.model,
+        deploy_config=args.deploy_config,
+        trust_remote_code=args.trust_remote_code,
+        enable_diffusion_pipeline_profiler=args.enable_diffusion_pipeline_profiler,
+    )
+    try:
+        sp = SamplingParams(
+            temperature=float(args.temperature),
+            top_p=float(args.top_p),
+            top_k=-1,
+            max_tokens=int(args.max_tokens),
+            seed=int(args.seed),
+            detokenize=True,
+        )
+        # NOTE: omni.generate() returns a Generator[OmniRequestOutput, None, None].
+        # Consume it inside the try block so the worker isn't closed early.
+        outputs = list(
+            omni.generate(
+                [
+                    {
+                        "prompt": prompt,
+                        "multi_modal_data": {"image": image_data},
+                        "additional_information": {"omni_task": ["chat"]},
+                    }
+                ],
+                [sp],
+            )
+        )
+    finally:
+        omni.close()
+
+    lines: list[str] = []
+    for stage_outputs in outputs:
+        ro = stage_outputs
+        text = ro.outputs[0].text if getattr(ro, "outputs", None) else str(ro)
+        lines.append(f"request_id: {getattr(ro, 'request_id', 'unknown')}\n")
+        lines.append("answer:\n")
+        lines.append(text.strip() + "\n")
+        lines.append("\n")
+
+    print("\n".join(lines))
+
+
+if __name__ == "__main__":
+    main()

examples/offline_inference/mimo_audio/end2end.py

@@ -297,7 +297,7 @@ def main(args):
     os.makedirs(output_dir, exist_ok=True)
 
     for stage_outputs in omni_outputs:
-        output = stage_outputs.request_output
+        output = stage_outputs
         if stage_outputs.final_output_type == "text":
             request_id = output.request_id
             text_output = output.outputs[0].text

examples/offline_inference/ming_flash_omni/end2end.py

@@ -347,7 +347,7 @@ def main(args):
         omni.start_profile(stages=args.profiler_stages)
 
     for stage_outputs in omni.generate(prompts, sampling_params_list):
-        output = stage_outputs.request_output
+        output = stage_outputs
         if stage_outputs.final_output_type == "text":
             request_id = output.request_id
             text_output = output.outputs[0].text

examples/offline_inference/minicpmo/end2end.py

@@ -452,12 +452,6 @@ def parse_args():
         default=None,
         help="Path to a .txt file with one prompt per line (preferred).",
     )
-    parser.add_argument(
-        "--stage-configs-path",
-        type=str,
-        default=None,
-        help="Path to a stage configs file (deprecated; prefer --deploy-config).",
-    )
     parser.add_argument(
         "--deploy-config",
         type=str,

examples/offline_inference/nemotron_voicechat/end2end.py

@@ -0,0 +1,229 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+"""Offline speech-to-speech with NVIDIA-NemotronLabs-VoiceChat-11B.
+
+Feeds a 16 kHz user utterance (plus a spoken-style system prompt) through the
+3-stage nemotron_voicechat pipeline and writes the agent's reply as text and a
+22.05 kHz WAV.
+
+Usage:
+    python end2end.py \
+        --checkpoint /path/to/NVIDIA-NemotronLabs-VoiceChat-11B \
+        --wav /path/to/user_question_16k.wav \
+        --output-dir results/nemotron_voicechat
+
+The system prompt defaults to the NeMo reference default. The text tokenizer
+resolves from the ``nvidia/NVIDIA-Nemotron-Nano-9B-v2`` HF id (or the
+``NEMOTRON_VOICECHAT_LLM_PATH`` env var for air-gapped runs).
+
+Sizing the input WAV: the timeline is frame-locked, so the reply budget IS the
+input duration — the acoustic channel trails the text channel, and a reply
+that has not finished when the frames run out is truncated SILENTLY (no error;
+ASR of the WAV will just disagree with the emitted text). Leave generous
+trailing silence after the question (a question ending at ~4.5 s truncated in
+an 8 s WAV but completed cleanly in a 16 s one). The script warns when the
+text channel is still emitting non-PAD tokens near the last frame.
+"""
+
+from __future__ import annotations
+
+import argparse
+import json
+import os
+from pathlib import Path
+
+import numpy as np
+import soundfile as sf
+
+# Warn if the text channel is still speaking within this many final frames
+# (12 frames = ~1 s) — the frame-locked reply likely got cut off.
+TRUNCATION_GUARD_FRAMES = 12
+
+# The NeMo reference offline script's default system prompt.
+DEFAULT_SYSTEM_PROMPT = (
+    "You are an AI voice assistant developed by NVIDIA. "
+    "Your name is NVIDIA Voice Chat. "
+    "Answer in a spoken, conversational style rather than a written one. "
+    "Do not repeat the same sentence over and over again. "
+    "Start the conversation by greeting the user."
+)
+
+
+def load_wav_16k_mono(path: str) -> np.ndarray:
+    wav, sr = sf.read(path, dtype="float32")
+    if wav.ndim > 1:
+        wav = wav.mean(axis=1)
+    if sr != 16000:
+        from vllm.multimodal.audio import resample_audio_scipy
+
+        wav = resample_audio_scipy(wav, orig_sr=sr, target_sr=16000)
+    return wav.astype(np.float32)
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument("--checkpoint", required=True, help="NVIDIA-NemotronLabs-VoiceChat-11B directory")
+    parser.add_argument("--wav", required=True, help="user speech (any sr; resampled to 16 kHz mono)")
+    parser.add_argument("--output-dir", default="results/nemotron_voicechat")
+    parser.add_argument("--system-prompt", default=DEFAULT_SYSTEM_PROMPT)
+    parser.add_argument(
+        "--stage-configs-path",
+        default=None,
+        help=(
+            "Deploy yaml override. Pass vllm_omni/deploy/nemotron_labs_voicechat_streaming.yaml "
+            "for the async-chunk streaming pipeline (stages overlap; audio starts decoding "
+            "before the thinker finishes). Default: the bundled non-streaming yaml (bit-exact "
+            "parity path)."
+        ),
+    )
+    args = parser.parse_args()
+
+    if not Path(args.wav).is_file():
+        raise FileNotFoundError(f"Input WAV not found: {args.wav}")
+    ckpt = Path(args.checkpoint)
+    raw_cfg = json.loads((ckpt / "config.json").read_text())
+    stt_cfg = raw_cfg["model"]["stt"]["model"]
+
+    from transformers import AutoTokenizer
+    from vllm.sampling_params import SamplingParams
+
+    from vllm_omni.entrypoints.omni import Omni
+    from vllm_omni.model_executor.models.nemotron_voicechat.nemotron_voicechat_thinker import (
+        compute_acoustic_frame_count,
+    )
+
+    tok_ref = os.environ.get("NEMOTRON_VOICECHAT_LLM_PATH") or stt_cfg.get(
+        "pretrained_llm", "nvidia/NVIDIA-Nemotron-Nano-9B-v2"
+    )
+    tokenizer = AutoTokenizer.from_pretrained(tok_ref, trust_remote_code=False)
+    bos_id = tokenizer.convert_tokens_to_ids(stt_cfg.get("bos_token", "<s>"))
+    eos_id = tokenizer.convert_tokens_to_ids(stt_cfg.get("eos_token", "</s>"))
+    pad_id = tokenizer.convert_tokens_to_ids(stt_cfg.get("pad_token", "<SPECIAL_12>"))
+    # NeMo encode_system_prompt: [bos] + tokens + [eos].
+    prompt_ids = [bos_id] + tokenizer.encode(args.system_prompt, add_special_tokens=False) + [eos_id]
+
+    wav = load_wav_16k_mono(args.wav)
+    n_frames = compute_acoustic_frame_count(stt_cfg, int(wav.shape[0]))
+    print(f"input: {wav.shape[0]} samples @16kHz -> {n_frames} acoustic frames; prompt {len(prompt_ids)} tokens")
+
+    inputs = {
+        # vLLM prompt = system prompt + one placeholder position (acoustic
+        # frame 0); the thinker replaces every position with fused embeddings.
+        "prompt_token_ids": prompt_ids + [pad_id],
+        "additional_information": {
+            # Plain float list: raw ndarrays do not survive the engine-core
+            # message serialization.
+            "nvc_audio": wav.astype(np.float32).tolist(),
+            "nvc_sr": 16000,
+            "nvc_prompt_token_ids": prompt_ids,
+            "nvc_expected_frames": n_frames,
+        },
+    }
+    sampling_params_list = [
+        # thinker: greedy, frame-locked generation length. NO min_tokens: the
+        # tokenizer's eos_token is <SPECIAL_12> — the frame-locked PAD/silence
+        # token — and vLLM's min_tokens masks "EOS" to -inf, which would forbid
+        # silence and force the agent to babble through the whole utterance.
+        SamplingParams(temperature=0.0, max_tokens=n_frames, ignore_eos=True, seed=0),
+        # talker: placeholder loop, stops on the stage's stop token. 16383:
+        # the 1-token placeholder prompt + max_tokens must fit the stage's
+        # max_model_len (16384).
+        SamplingParams(temperature=0.0, max_tokens=16383, stop_token_ids=[1], detokenize=False, seed=0),
+        # code2wav: single decode step.
+        SamplingParams(temperature=0.0, max_tokens=1, detokenize=False, seed=0),
+    ]
+
+    omni_kwargs: dict = {}
+    if args.stage_configs_path:
+        omni_kwargs["stage_configs_path"] = args.stage_configs_path
+    omni = Omni(model=str(ckpt), trust_remote_code=True, **omni_kwargs)
+    outputs = omni.generate(inputs, sampling_params_list)
+
+    out_dir = Path(args.output_dir)
+    out_dir.mkdir(parents=True, exist_ok=True)
+    stem = Path(args.wav).stem
+
+    agent_text = None
+    audio = None
+    sr = 22050
+    for stage_outputs in outputs:
+        # One entry per final stage (text from the thinker, audio from code2wav);
+        # mirrors the qwen2_5_omni offline example's collection loop.
+        output = getattr(stage_outputs, "request_output", stage_outputs)
+        final_type = getattr(stage_outputs, "final_output_type", None)
+        completions = getattr(output, "outputs", None) or []
+        if not completions:
+            continue
+        completion = completions[0]
+        if final_type in (None, "text"):
+            text = getattr(completion, "text", None)
+            if text:
+                agent_text = text
+            token_ids = getattr(completion, "token_ids", None)
+            if token_ids:
+                (out_dir / f"{stem}_text_tokens.json").write_text(json.dumps(list(map(int, token_ids))))
+                # Frame lock: the reply budget IS the input length. If the text
+                # channel is still mid-sentence when the frames run out, the
+                # spoken answer is silently truncated — warn instead.
+                tail = list(map(int, token_ids))[-TRUNCATION_GUARD_FRAMES:]
+                if any(t != pad_id for t in tail):
+                    print(
+                        f"WARNING: the text channel emits non-PAD tokens within the last "
+                        f"{TRUNCATION_GUARD_FRAMES} frames ({TRUNCATION_GUARD_FRAMES * 80} ms) — the reply "
+                        "likely ran out of acoustic frames and is cut off mid-sentence. "
+                        "Pad the input WAV with more trailing silence and rerun."
+                    )
+            # Best-effort: dump the function-channel debug timeline if the
+            # engine surfaced the request info on this output.
+            info = getattr(output, "additional_information", None)
+            func_timeline = info.get("nvc_function_tokens") if isinstance(info, dict) else None
+            if func_timeline is not None:
+                values = func_timeline.tolist() if hasattr(func_timeline, "tolist") else list(func_timeline)
+                (out_dir / f"{stem}_function_tokens.json").write_text(json.dumps([int(v) for v in values]))
+                print(f"function-channel timeline: {len(values)} entries")
+        if final_type in (None, "audio"):
+            # multimodal_output is a MultimodalPayload (Mapping) — duck-type it.
+            mm = getattr(completion, "multimodal_output", None)
+            get = getattr(mm, "get", None)
+            if not callable(get):
+                continue
+            candidate = None
+            for key in ("audio", "model_outputs", "wav", "waveform"):
+                value = get(key)
+                if value is not None:
+                    candidate = value
+                    break
+            if isinstance(candidate, list):
+                candidate = candidate[0] if candidate else None
+            if candidate is not None:
+                arr = np.asarray(
+                    candidate.float().cpu() if hasattr(candidate, "cpu") else candidate, dtype=np.float32
+                ).reshape(-1)
+                if arr.size > 0:
+                    audio = arr
+                sr_val = get("sr")
+                if sr_val is not None:
+                    sr_item = sr_val[0] if isinstance(sr_val, list) else sr_val
+                    sr = int(sr_item.item() if hasattr(sr_item, "item") else sr_item)
+
+    if agent_text is not None:
+        # The frame-locked text channel emits PAD tokens on silent frames;
+        # strip them (NeMo's post-inference detokenizer does the same).
+        pad_token = stt_cfg.get("pad_token", "<SPECIAL_12>")
+        agent_text = " ".join(agent_text.replace(pad_token, " ").split())
+        text_path = out_dir / f"{stem}_output.txt"
+        text_path.write_text(agent_text + "\n")
+        print(f"agent text -> {text_path}\n{agent_text}")
+    else:
+        print("WARNING: no agent text in outputs")
+
+    if audio is not None and audio.size > 0:
+        wav_path = out_dir / f"{stem}_output.wav"
+        sf.write(wav_path, audio, sr)
+        print(f"agent audio -> {wav_path} ({audio.size / sr:.2f}s @ {sr} Hz)")
+    else:
+        raise RuntimeError("No audio produced by the code2wav stage.")
+
+
+if __name__ == "__main__":
+    main()

examples/offline_inference/qwen2_5_omni/end2end.py

@@ -392,7 +392,7 @@ def main(args):
     total_requests = len(prompts)
     processed_count = 0
     for stage_outputs in omni_generator:
-        output = stage_outputs.request_output
+        output = stage_outputs
         if stage_outputs.final_output_type == "text":
             request_id = output.request_id
             text_output = output.outputs[0].text

examples/offline_inference/qwen3_omni/end2end.py

@@ -367,7 +367,7 @@ def main(args):
     print(f"query type: {args.query_type}")
 
     for stage_outputs in omni_generator:
-        output = stage_outputs.request_output
+        output = stage_outputs
         if stage_outputs.final_output_type == "text":
             request_id = output.request_id
             text_output = output.outputs[0].text
@@ -484,10 +484,10 @@ def parse_args():
         help="Path to a .txt file with one prompt per line (preferred).",
     )
     parser.add_argument(
-        "--stage-configs-path",
+        "--deploy-config",
         type=str,
         default=None,
-        help="Path to a stage configs file.",
+        help="Path to a deploy config YAML.",
     )
     parser.add_argument(
         "--video-path",

examples/offline_inference/qwen3_omni/end2end_async_chunk.py

@@ -237,7 +237,7 @@ async def run_single_request(
             sampling_params_list=sampling_params_list,
             output_modalities=output_modalities,
         ):
-            output = omni_output.request_output
+            output = omni_output
             if omni_output.final_output_type == "text":
                 if stage_0_first_output_ts is None:
                     stage_0_first_output_ts = time.perf_counter()

examples/offline_inference/speech_to_video/speech_to_video.py

@@ -26,7 +26,6 @@ import torch
 from vllm_omni.diffusion.data import DiffusionParallelConfig
 from vllm_omni.entrypoints.omni import Omni
 from vllm_omni.inputs.data import OmniDiffusionSamplingParams
-from vllm_omni.outputs import OmniRequestOutput
 from vllm_omni.platforms import current_omni_platform
 
 
@@ -352,8 +351,8 @@ def main():
         else:
             print("[Profiler] No valid profiling data returned.")
 
-    # Extract output from result
-    output = OmniRequestOutput.unwrap_result(result)
+    # omni.generate() returns a list for sync calls; unwrap single-result list.
+    output = result[0] if isinstance(result, list) else result
 
     if not output.images:
         raise ValueError("No video frames found in OmniRequestOutput.")

examples/offline_inference/step_audio2/end2end.py

@@ -232,15 +232,8 @@ def main(args):
         raise ValueError(f"Unknown query type: {args.query_type}")
 
     # Initialize vLLM-Omni with Step-Audio2
-    # Resolve deploy config path. Keep explicit stage_configs_path for legacy
-    # custom configs, but use bundled deploy configs by default.
-    deploy_config_path = None
-    stage_config_path = None
-    if args.stage_configs_path and args.deploy_config:
-        raise ValueError("--stage-configs-path and --deploy-config are mutually exclusive")
-    if args.stage_configs_path:
-        stage_config_path = args.stage_configs_path
-    elif args.deploy_config:
+    # Resolve an explicit deploy config or use the bundled task default.
+    if args.deploy_config:
         deploy_config_path = args.deploy_config
     else:
         configs_dir = Path(__file__).parent.parent.parent.parent / "vllm_omni/deploy"
@@ -262,10 +255,7 @@ def main(args):
         "ray_address": args.ray_address,
         "trust_remote_code": True,
     }
-    if stage_config_path is not None:
-        omni_kwargs["stage_configs_path"] = stage_config_path
-    else:
-        omni_kwargs["deploy_config"] = deploy_config_path
+    omni_kwargs["deploy_config"] = deploy_config_path
 
     omni_llm = Omni(**omni_kwargs)
 
@@ -345,7 +335,7 @@ def main(args):
     # Process outputs from each stage
     for stage_idx, stage_outputs in enumerate(omni_outputs):
         # request_output may be a single object or a list
-        raw_output = stage_outputs.request_output
+        raw_output = stage_outputs
         outputs_list = raw_output if isinstance(raw_output, list) else [raw_output]
 
         if stage_outputs.final_output_type == "text":
@@ -418,12 +408,6 @@ def parse_args():
             "  - HuggingFace ID: stepfun-ai/Step-Audio-2-mini"
         ),
     )
-    parser.add_argument(
-        "--stage-configs-path",
-        type=str,
-        default=None,
-        help="Path to a legacy stage config YAML file (default: use bundled deploy config)",
-    )
     parser.add_argument(
         "--deploy-config",
         type=str,

examples/offline_inference/text_to_audio/text_to_audio.py

@@ -43,6 +43,7 @@ from vllm_omni.diffusion.utils.param_utils import apply_declared_extra_args
 from vllm_omni.entrypoints.omni import Omni
 from vllm_omni.inputs.data import OmniDiffusionSamplingParams
 from vllm_omni.model_extras import get_extra_body_params, get_model_class_name
+from vllm_omni.outputs import OmniRequestOutput
 from vllm_omni.platforms import current_omni_platform
 
 AUDIOX_TASKS = ("t2a", "t2m", "v2a", "v2m", "tv2a", "tv2m")
@@ -388,9 +389,9 @@ def main():
         raise ValueError("No output generated from omni.generate()")
 
     output = outputs[0]
-    if not hasattr(output, "request_output") or not output.request_output:
+    if not isinstance(output, OmniRequestOutput) or not output:
         raise ValueError("No request_output found in OmniRequestOutput")
-    request_output = output.request_output
+    request_output = output
     if not hasattr(request_output, "multimodal_output"):
         raise ValueError("No multimodal_output found in request_output")
 

examples/offline_inference/text_to_image/gradio_demo.py

@@ -115,7 +115,7 @@ def build_demo(args: argparse.Namespace) -> gr.Blocks:
         )
         images_outputs = []
         for output in outputs:
-            req_out = output.request_output
+            req_out = output
             if not isinstance(req_out, OmniRequestOutput) or not hasattr(req_out, "images"):
                 raise ValueError("Invalid request_output structure or missing 'images' key")
             images = req_out.images

examples/offline_inference/text_to_image/text_to_image.py

@@ -92,12 +92,6 @@ def parse_args() -> argparse.Namespace:
         "meituan-longcat/LongCat-Image, OvisAI/Ovis-Image, "
         "stabilityai/stable-diffusion-3.5-medium, Tongyi-MAI/Z-Image-Turbo and etc.",
     )
-    parser.add_argument(
-        "--stage-configs-path",
-        type=str,
-        default=None,
-        help="[Deprecated] Path to a legacy stage_args-format YAML. Prefer --deploy-config.",
-    )
     parser.add_argument(
         "--deploy-config",
         type=str,
@@ -475,8 +469,6 @@ def main():
         omni_kwargs["tensor_parallel_size"] = args.tensor_parallel_size
     if args.enforce_eager is not None:
         omni_kwargs["enforce_eager"] = args.enforce_eager
-    if args.stage_configs_path:
-        omni_kwargs["stage_configs_path"] = args.stage_configs_path
     if args.deploy_config:
         omni_kwargs["deploy_config"] = args.deploy_config
     if use_nextstep:
@@ -515,8 +507,8 @@ def main():
     print(f"  Image size: {args.width}x{args.height}")
     if args.lora_path:
         print(f"  LoRA: scale={args.lora_scale}")
-    if args.stage_configs_path:
-        print(f"  stage-configs-path: {args.stage_configs_path}")
+    if args.deploy_config:
+        print(f"  deploy-config: {args.deploy_config}")
     print(f"{'=' * 60}\n")
 
     # Build LoRA request when --lora-path is set
@@ -656,7 +648,7 @@ def main():
         images = getattr(output, "images", None)
         if images:
             break
-        req_out = getattr(output, "request_output", None)
+        req_out = output
         images = getattr(req_out, "images", None) if req_out is not None else None
         if images:
             break

examples/offline_inference/text_to_speech/README.md

@@ -23,6 +23,7 @@ list of supported architectures across all modalities, see
 | OmniVoice | `k2-fsa/OmniVoice` | 2 (gen + dec) | ✓ | — | voice design, language hint | 24 kHz |
 | Qwen3-TTS | `Qwen/Qwen3-TTS-12Hz-1.7B-{CustomVoice,VoiceDesign,Base}` | 2 (talker + code2wav) | ✓ (Base) | ✓ | 3 task variants | 24 kHz |
 | VoxCPM2 | `openbmb/VoxCPM2` | single (native AR) | ✓ | ✓ (online) | continuation | 48 kHz |
+| dots.tts | `rednote-hilab/dots.tts-soar` | single (native AR) | — (not wired yet) | — | — | 48 kHz |
 | IndexTTS-2 | `IndexTeam/IndexTTS-2` | 2 (AR talker + S2Mel DiT + BigVGAN) | ✓ (required) | — | emotion control (`--emo-audio`, `--emo-text`, `--emo-vector`) | 22.05 kHz |
 | IndexTTS-2.5 | native `checkpoints/` bundle | 2 (AR talker + EnhancedCodec + S2Mel DiT + BigVGAN) | ✓ (required) | — | multilingual (`--lang`) + emotion control | 22.05 kHz |
 | Voxtral TTS | `mistralai/Voxtral-4B-TTS-2603` | varies | ✓ | ✓ | voice presets | 24 kHz |
@@ -372,18 +373,10 @@ python examples/offline_inference/text_to_speech/qwen3_tts/end2end.py \
 Streaming requires `async_chunk: true` in the stage config.
 
 ### Word Timestamps
-Generate a WAV offline and a JSON sidecar with word-level timestamps from
-`Qwen/Qwen3-ForcedAligner-0.6B`:
-```bash
-python examples/offline_inference/text_to_speech/qwen3_tts/word_timestamps.py \
-    --model Qwen/Qwen3-TTS-12Hz-1.7B-CustomVoice \
-    --forced-aligner Qwen/Qwen3-ForcedAligner-0.6B \
-    --text "Hello world." \
-    --output-dir /tmp/qwen3_tts_timestamps
-```
-The script writes `qwen3_tts_word_timestamps.wav` and
-`qwen3_tts_word_timestamps.json`. On machines without a local CUDA toolkit,
-set `VLLM_USE_FLASHINFER_SAMPLER=0` to avoid FlashInfer sampler JIT.
+Word-level timestamps are currently a serving-path feature: launch
+`vllm-omni serve` with `--forced-aligner` and request `word_timestamps`
+(see `examples/online_serving/text_to_speech/README.md`). An offline
+example is not provided in this release.
 
 ### Batched decoding
 The Code2Wav stage supports batched decoding through the SpeechTokenizer. Pass multiple prompts via `--txt-prompts` and set `--batch-size` accordingly. To raise `max_num_seqs` on either stage, point `--stage-configs-path` at a stage configs YAML with the desired values (see `vllm_omni/model_executor/stage_configs/` for templates):
@@ -438,6 +431,31 @@ Streaming is exposed through the online OpenAI Speech API (`stream=true`). See [
 
 ---
 
+## dots.tts
+
+Single-stage native AR TTS at 48 kHz (rednote-hilab). Pipeline: `Qwen2.5-1.5B base LM → DiT (10-step Euler flow matching) → patch_encoder AR loopback → AudioVAE (streaming decode)`. Same "vLLM-native base LM + side-path computation" pattern as VoxCPM2, with a plain Qwen2 backbone instead of MiniCPM4 and no FSQ / residual LM stage.
+
+### Quick start
+```bash
+python examples/offline_inference/text_to_speech/dots_tts/end2end.py \
+    --model rednote-hilab/dots.tts-soar \
+    --text "Hello, this is a test of dots TTS running on vLLM Omni."
+```
+
+### Voice cloning
+Not wired in this release — generation is zero-shot only. The CAM++ x-vector speaker encoder weights load, but `end2end.py` has no `--ref-audio`/`--ref-text` flags yet.
+
+### Streaming
+The AudioVAE decoder has an internal streaming path (`init_stream_state` / `stream_step` / `stream_flush`) used to avoid boundary artifacts between 160 ms patches, but it is not yet exposed through an online serving endpoint or example.
+
+### Notes
+- Output: 48 kHz mono WAV.
+- Deploy config: `vllm_omni/deploy/dots_tts.yaml` (auto-loaded by HF `model_type`).
+- Checkpoints: `rednote-hilab/dots.tts-soar` is the validated default. `dots.tts-base` shares the same architecture but is unvalidated in this repo. `dots.tts-mf` (MeanFlow, 2-4 step) is not supported yet.
+- Known limitation: no CUDA graph capture and no batched side-path computation yet, so concurrent requests do not currently scale (each request's DiT Euler steps run serially). See `recipes/rednote-hilab/dots.tts.md` for details and the roadmap.
+
+---
+
 ## IndexTTS-2 and IndexTTS-2.5
 
 Both versions use a 2-stage TTS pipeline and produce 22.05 kHz mono audio. Stage 0 is a GPT AR talker. IndexTTS-2 Stage 1 uses RepCodec semantic embeddings, GPT latent, S2Mel CFM/DiT, and BigVGAN. IndexTTS-2.5 replaces RepCodec with EnhancedCodec and uses the official code-only path (`use_gpt_latent=false`). Every request requires reference audio for zero-shot voice cloning.

examples/offline_inference/text_to_speech/cosyvoice3/end2end.py

@@ -168,7 +168,7 @@ def run_e2e():
     print(f"Received {len(outputs)} outputs.")
     for i, output in enumerate(outputs):
         try:
-            ro = output.request_output
+            ro = output
             if ro is None:
                 print("No request_output found.")
                 continue

examples/offline_inference/text_to_speech/dots_tts/end2end.py

@@ -0,0 +1,125 @@
+"""Offline dots.tts inference example (single-stage native AR pipeline).
+
+Uses the single-stage native AR config (vllm_omni/deploy/dots_tts.yaml).
+Reference checkpoint: rednote-hilab/dots.tts-soar.
+"""
+
+from __future__ import annotations
+
+import os
+import time
+from pathlib import Path
+
+import soundfile as sf
+import torch
+
+from vllm_omni import Omni
+from vllm_omni.utils.tracking_parser import TrackingArgumentParser
+
+REPO_ROOT = Path(__file__).resolve().parents[4]
+SAMPLE_RATE = 48_000
+
+
+def parse_args():
+    parser = TrackingArgumentParser(description="Offline dots.tts native AR inference")
+    parser.add_argument(
+        "--model",
+        type=str,
+        default="rednote-hilab/dots.tts-soar",
+        help="dots.tts model path or HuggingFace repo ID.",
+    )
+    parser.add_argument(
+        "--text",
+        type=str,
+        default="Hello, this is a test of dots TTS running on vLLM Omni.",
+        help="Text to synthesize.",
+    )
+    parser.add_argument(
+        "--output-dir",
+        type=str,
+        default="output_audio",
+        help="Directory for output WAV files.",
+    )
+    parser.add_argument(
+        "--deploy-config",
+        type=str,
+        default=None,
+        help="Override the deploy config path. If unset, auto-loads "
+        "vllm_omni/deploy/dots_tts.yaml based on the HF model_type.",
+    )
+    return parser.parse_args()
+
+
+def extract_audio(multimodal_output: dict) -> torch.Tensor:
+    """Extract the final complete audio tensor from multimodal output.
+
+    The output processor concatenates per-step delta tensors under
+    ``model_outputs``.  Falls back to ``audio`` for backwards compat.
+    """
+    audio = multimodal_output.get("model_outputs")
+    if audio is None:
+        audio = multimodal_output.get("audio")
+    if audio is None:
+        raise ValueError(f"No audio key in multimodal_output: {list(multimodal_output.keys())}")
+
+    if isinstance(audio, list):
+        valid = [torch.as_tensor(a).float().cpu().reshape(-1) for a in audio if a is not None]
+        if not valid:
+            raise ValueError("Audio list is empty or all elements are None.")
+        return torch.cat(valid, dim=0) if len(valid) > 1 else valid[0]
+
+    return torch.as_tensor(audio).float().cpu().reshape(-1)
+
+
+def main():
+    args = parse_args()
+
+    output_dir = Path(args.output_dir)
+    output_dir.mkdir(parents=True, exist_ok=True)
+
+    engine = Omni(
+        model=args.model,
+        deploy_config=args.deploy_config,
+    )
+
+    from transformers import AutoTokenizer
+
+    from vllm_omni.model_executor.models.dots_tts.dots_tts_prompt import (
+        build_dots_tts_prompt,
+    )
+
+    tokenizer = AutoTokenizer.from_pretrained(args.model, trust_remote_code=True)
+
+    prompt = build_dots_tts_prompt(
+        tokenizer=tokenizer,
+        text=args.text,
+    )
+
+    print(f"Model       : {args.model}")
+    print(f"Text        : {args.text}")
+    print(f"Output dir  : {output_dir}")
+    print(f"Prompt len  : {len(prompt['prompt_token_ids'])} tokens")
+
+    t_start = time.perf_counter()
+    outputs = engine.generate([prompt])
+    elapsed = time.perf_counter() - t_start
+
+    request_output = outputs[0]
+    mm = request_output.outputs[0].multimodal_output
+    audio = extract_audio(mm)
+
+    duration = audio.numel() / SAMPLE_RATE
+    rtf = elapsed / duration if duration > 0 else float("inf")
+
+    output_path = output_dir / "output.wav"
+    sf.write(str(output_path), audio.numpy(), SAMPLE_RATE, format="WAV")
+
+    print(f"Saved       : {output_path}")
+    print(f"Duration    : {duration:.2f}s")
+    print(f"Inference   : {elapsed:.2f}s")
+    print(f"RTF         : {rtf:.3f}")
+
+
+if __name__ == "__main__":
+    os.environ["VLLM_WORKER_MULTIPROC_METHOD"] = "spawn"
+    main()

examples/offline_inference/text_to_speech/fish_speech/end2end.py

@@ -38,7 +38,7 @@ from vllm_omni.utils.tracking_parser import TrackingArgumentParser
 logger = logging.getLogger(__name__)
 
 DEFAULT_MODEL = "fishaudio/s2-pro"
-DEFAULT_STAGE_CONFIG = os.path.join(
+DEFAULT_DEPLOY_CONFIG = os.path.join(
     os.path.dirname(__file__),
     "..",
     "..",
@@ -152,10 +152,7 @@ def _build_omni_kwargs(args, model_name: str) -> dict:
         log_stats=args.log_stats,
         stage_init_timeout=args.stage_init_timeout,
     )
-    if args.deploy_config:
-        omni_kwargs["deploy_config"] = args.deploy_config
-    else:
-        omni_kwargs["stage_configs_path"] = args.stage_configs_path or DEFAULT_STAGE_CONFIG
+    omni_kwargs["deploy_config"] = args.deploy_config or DEFAULT_DEPLOY_CONFIG
     return omni_kwargs
 
 
@@ -179,7 +176,7 @@ def main(args):
 
     t_start = time.perf_counter()
     for stage_outputs in omni.generate(inputs):
-        request_output = stage_outputs.request_output
+        request_output = stage_outputs
         if request_output is None or not request_output.outputs:
             continue
         _save_wav(
@@ -215,7 +212,7 @@ async def main_streaming(args):
     sample_rate = None
 
     async for stage_output in omni.generate(prompt, request_id=request_id):
-        mm = stage_output.request_output.outputs[0].multimodal_output
+        mm = stage_output.outputs[0].multimodal_output
         if not stage_output.finished:
             t_now = time.perf_counter()
             sample_rate, n = _collect_audio_chunk(mm, all_audio_chunks, sample_rate)
@@ -278,12 +275,6 @@ def parse_args():
         default=None,
         help="Deploy config YAML path (under vllm_omni/deploy/).",
     )
-    parser.add_argument(
-        "--stage-configs-path",
-        type=str,
-        default=None,
-        help="Path to stage configs YAML (legacy, prefer --deploy-config).",
-    )
     parser.add_argument(
         "--output-dir",
         default="output_audio",

examples/offline_inference/text_to_speech/glm_tts/end2end.py

@@ -145,7 +145,7 @@ def main(args):
 
     omni = Omni(
         model=args.model,
-        stage_configs_path=deploy_config_path,
+        deploy_config=deploy_config_path,
         log_stats=args.log_stats,
         stage_init_timeout=args.stage_init_timeout,
     )

examples/offline_inference/text_to_speech/moss_tts_nano/end2end.py

@@ -137,7 +137,7 @@ def main(args) -> None:
     params_list = sampling_params
 
     for stage_outputs in omni.generate(inputs, params_list):
-        for i, req_output in enumerate(stage_outputs.request_output):
+        for i, req_output in enumerate(stage_outputs):
             for j, out in enumerate(req_output.outputs):
                 mm = out.multimodal_output
                 if mm is None:

examples/offline_inference/text_to_speech/omnivoice/end2end.py

@@ -135,7 +135,7 @@ def run_e2e():
     print(f"Received {len(outputs)} outputs.")
     for i, output in enumerate(outputs):
         try:
-            ro = output.request_output
+            ro = output
             if ro is None:
                 print("No request_output found.")
                 continue

examples/offline_inference/text_to_speech/qwen3_tts/end2end.py

@@ -391,7 +391,7 @@ def main(args):
     for batch_start in range(0, len(inputs), batch_size):
         batch = inputs[batch_start : batch_start + batch_size]
         for stage_outputs in omni.generate(batch):
-            output = stage_outputs.request_output
+            output = stage_outputs
             _save_wav(output_dir, output.request_id, output.outputs[0].multimodal_output)
 
 
@@ -412,7 +412,7 @@ async def main_streaming(args):
         t_prev = t_start
         chunk_idx = 0
         async for stage_output in omni.generate(prompt, request_id=request_id):
-            mm = stage_output.request_output.outputs[0].multimodal_output
+            mm = stage_output.outputs[0].multimodal_output
             if not stage_output.finished:
                 t_now = time.perf_counter()
                 audio = mm.get("audio")
@@ -490,10 +490,10 @@ def parse_args():
         help="Path to a .txt file with one prompt per line (preferred).",
     )
     parser.add_argument(
-        "--stage-configs-path",
+        "--deploy-config",
         type=str,
         default=None,
-        help="Path to a stage configs file.",
+        help="Path to a deploy config YAML.",
     )
     parser.add_argument(
         "--audio-path",

examples/offline_inference/text_to_speech/qwen3_tts/word_timestamps.py

@@ -116,7 +116,7 @@ def main(args: Any) -> None:
     prompt = _build_custom_voice_input(args)
     final_output = None
     for stage_outputs in omni.generate([prompt]):
-        final_output = stage_outputs.request_output
+        final_output = stage_outputs
     if final_output is None:
         raise RuntimeError("Qwen3-TTS did not produce an output.")
 

examples/offline_inference/text_to_speech/soulxsinger/benchmark.py

@@ -38,7 +38,7 @@ def _stage_durations_from_output(outputs) -> dict[str, float]:
     durations = getattr(omni_out, "stage_durations", None) or {}
     if durations:
         return dict(durations)
-    ro = getattr(omni_out, "request_output", None)
+    ro = omni_out
     if ro is not None:
         return dict(getattr(ro, "stage_durations", None) or {})
     return {}

examples/offline_inference/text_to_speech/soulxsinger/end2end.py

@@ -99,7 +99,7 @@ def extract_audio(outputs) -> tuple[np.ndarray, int]:
     out = outputs[0]
     mm = getattr(out, "multimodal_output", None)
     if mm is None:
-        ro = getattr(out, "request_output", None)
+        ro = out
         if ro is not None:
             mm = getattr(ro, "multimodal_output", None)
             if mm is None and ro.outputs:

examples/offline_inference/text_to_video/text_to_video.md

@@ -8,6 +8,7 @@ A unified script for text-to-video generation. Supports multiple models with mod
 |---|---|---|---|---|---|
 | `Wan-AI/Wan2.1-VACE-1.3B-diffusers` | 480x832 | 81 | 30 | 5.0 | ~20 GiB (RTX 5090, VAE tiling) |
 | `Wan-AI/Wan2.2-T2V-A14B-Diffusers` | 720x1280 | 81 | 40 | 4.0 | ~60 GiB |
+| `robbyant/lingbot-video-dense-1.3b` / `robbyant/lingbot-video-moe-30b-a3b` | 192x320 | 9 | 2 | 3.0 | ~68 GiB (MoE smoke) |
 | `Lightricks/LTX-2` | 512x768 | 121 | 40 | video 3.0 / audio 7.0 | Model-dependent |
 | `hunyuanvideo-community/HunyuanVideo-1.5-Diffusers-480p_t2v` | 480x832 | 121 | 50 | 6.0 | 1×A100 80GB |
 | `hunyuanvideo-community/HunyuanVideo-1.5-Diffusers-720p_t2v` | 720x1280 | 121 | 50 | 6.0 | FP8 + VAE tiling required |
@@ -57,18 +58,31 @@ python text_to_video.py \
 
 ### LingBot-Video
 
-The dedicated LingBot example explicitly selects the video output modality:
+The shared runner recognizes the official dense and MoE checkpoint IDs, selects
+`LingBotVideoPipeline`, and builds the canonical video request envelope:
 
 ```bash
-python examples/offline_inference/text_to_video/text_to_video_lingbot.py \
+python text_to_video.py \
   --model robbyant/lingbot-video-dense-1.3b \
+  --prompt "a robotic arm picks up a red block" \
   --height 192 --width 320 --num-frames 9 --num-inference-steps 2 \
+  --guidance-scale 3.0 --flow-shift 3.0 --fps 24 \
   --output lingbot_t2v.mp4
 ```
 
 Use the same command with `robbyant/lingbot-video-moe-30b-a3b` for the MoE
 checkpoint. Requested frame counts are rounded upward to the causal
-VAE's `4n+1` grid.
+VAE's `4n+1` grid. For a local checkpoint path whose name does not contain
+`lingbot`, pass `--model-class-name LingBotVideoPipeline`.
+
+LingBot-only options such as `batch_cfg` and `output_type` use the shared
+model-extra channel, for example:
+
+```bash
+python text_to_video.py \
+  --model robbyant/lingbot-video-dense-1.3b \
+  --extra-body '{"batch_cfg": true, "output_type": "np"}'
+```
 
 ### LTX-2
 

examples/offline_inference/text_to_video/text_to_video.py

@@ -16,7 +16,7 @@ from vllm_omni.entrypoints.omni import Omni
 from vllm_omni.inputs.data import OmniDiffusionSamplingParams
 from vllm_omni.lora.request import LoRARequest
 from vllm_omni.lora.utils import stable_lora_int_id
-from vllm_omni.model_extras import get_extra_body_params, get_model_class_name
+from vllm_omni.model_extras import get_extra_body_params, get_model_class_name, get_output_tensor_range
 from vllm_omni.outputs import OmniRequestOutput
 from vllm_omni.platforms import current_omni_platform
 
@@ -80,6 +80,17 @@ _MODEL_PRESETS = {
         "fps": 16,
         "output": "helios_output.mp4",
     },
+    "lingbot": {
+        "model_class_name": "LingBotVideoPipeline",
+        "height": 192,
+        "width": 320,
+        "num_frames": 9,
+        "num_inference_steps": 2,
+        "guidance_scale": 3.0,
+        "fps": 24,
+        "flow_shift": 3.0,
+        "output": "lingbot_video_output.mp4",
+    },
     "ltx2": {
         "height": 512,
         "width": 768,
@@ -110,27 +121,51 @@ _MODEL_PRESETS = {
 def _detect_preset(model: str, model_class_name: str | None = None) -> dict:
     model_lower = model.lower()
     class_lower = (model_class_name or "").lower()
-    if "distilled" in class_lower or "distilled" in model_lower:
-        return _MODEL_PRESETS["ltx2_distilled"]
-    if "ltx23" in class_lower or "ltx-2.3" in model_lower or "ltx_2.3" in model_lower:
-        return _MODEL_PRESETS["ltx23"]
-    if "ltx2" in class_lower or "ltx-2" in model_lower or "ltx_2" in model_lower:
+    if "lingbot" in model_lower or "lingbotvideo" in class_lower:
+        return _MODEL_PRESETS["lingbot"]
+    if "ltx" in class_lower or "ltx" in model_lower:
+        if "distilled" in class_lower or "distilled" in model_lower:
+            return _MODEL_PRESETS["ltx2_distilled"]
+        if "ltx23" in class_lower or "ltx-2.3" in model_lower or "ltx_2.3" in model_lower:
+            return _MODEL_PRESETS["ltx23"]
         return _MODEL_PRESETS["ltx2"]
-    if "vace" in model_lower:
+    if "vace" in model_lower or "vace" in class_lower:
         return _MODEL_PRESETS["vace"]
     # Edge must be matched before the generic cosmos branch (its "cosmos" substring would
     # otherwise pick up the Nano/Super 720p / gs 6.0 / flow_shift 10.0 preset).
     if ("cosmos" in model_lower or "cosmos" in class_lower) and ("edge" in model_lower or "edge" in class_lower):
         return _MODEL_PRESETS["cosmos3_edge"]
-    if "cosmos" in model_lower:
+    if "cosmos" in model_lower or "cosmos" in class_lower:
         return _MODEL_PRESETS["cosmos"]
-    if "hunyuan" in model_lower:
+    if "hunyuan" in model_lower or "hunyuan" in class_lower:
         return _MODEL_PRESETS["hunyuan"]
-    if "helios" in model_lower:
+    if "helios" in model_lower or "helios" in class_lower:
         return _MODEL_PRESETS["helios"]
     return _MODEL_PRESETS["wan"]
 
 
+def build_text_to_video_prompt(prompt: str, negative_prompt: str | None) -> dict[str, Any]:
+    """Build the canonical request envelope for the shared T2V example."""
+    result: dict[str, Any] = {
+        "prompt": prompt,
+        "modalities": ["video"],
+    }
+    if negative_prompt is not None:
+        result["negative_prompt"] = negative_prompt
+    return result
+
+
+def _normalize_float_tensor(tensor: torch.Tensor, source_range: str) -> torch.Tensor:
+    """Normalize decoded frames according to the pipeline's output contract."""
+    if not tensor.is_floating_point():
+        return tensor
+    if source_range == "negative_one_to_one":
+        return tensor.clamp(-1, 1) * 0.5 + 0.5
+    if source_range == "zero_to_one":
+        return tensor.clamp(0, 1)
+    raise ValueError(f"Unsupported floating-point tensor range: {source_range!r}")
+
+
 def parse_profiler_config(value: str) -> dict[str, Any]:
     try:
         config = json.loads(value)
@@ -160,7 +195,7 @@ def parse_extra_body(value: str) -> dict[str, Any]:
 def parse_args() -> argparse.Namespace:
     parser = argparse.ArgumentParser(
         description="Generate a video from a text prompt. "
-        "Supports Wan2.2, HunyuanVideo-1.5, Helios, and other text-to-video models."
+        "Supports Wan2.2, HunyuanVideo-1.5, Helios, LingBot-Video, and other text-to-video models."
     )
     parser.add_argument(
         "--model",
@@ -390,7 +425,7 @@ def _extract_peak_memory_mb(result: Any) -> float:
         return 0.0
     val = getattr(result, "peak_memory_mb", 0.0)
     if not val:
-        inner = getattr(result, "request_output", None)
+        inner = result
         if isinstance(inner, list):
             inner = inner[0] if inner else None
         val = getattr(inner, "peak_memory_mb", 0.0)
@@ -408,6 +443,7 @@ def main():
     for key, default_val in preset.items():
         if getattr(args, key.replace("-", "_"), None) is None:
             setattr(args, key.replace("-", "_"), default_val)
+    model_class_name = args.model_class_name
 
     generator = torch.Generator(device=current_omni_platform.device_type).manual_seed(args.seed)
     # Cache-dit config (Wan2.2 only)
@@ -480,6 +516,7 @@ def main():
     omni = Omni(**omni_kwargs)
     model_class_name = get_model_class_name(omni) or model_class_name
     declared_extra_body_params = get_extra_body_params(model_class_name)
+    output_tensor_range = get_output_tensor_range(model_class_name)
 
     if profiler_enabled:
         print("[Profiler] Starting profiling...")
@@ -513,12 +550,11 @@ def main():
             lora_path=lora_path,
         )
 
-    prompt_dict = {"prompt": args.prompt}
-    if args.negative_prompt is not None:
-        prompt_dict["negative_prompt"] = args.negative_prompt
-    elif preset not in (_MODEL_PRESETS["ltx2"], _MODEL_PRESETS["ltx23"]):
+    negative_prompt = args.negative_prompt
+    if negative_prompt is None and all(preset is not _MODEL_PRESETS[name] for name in ("lingbot", "ltx2", "ltx23")):
         # Preserve the historical empty-prompt behavior for non-LTX examples.
-        prompt_dict["negative_prompt"] = ""
+        negative_prompt = ""
+    prompt_dict = build_text_to_video_prompt(args.prompt, negative_prompt)
 
     extra_args = {}
     if lora_request:
@@ -575,8 +611,8 @@ def main():
         if frames.multimodal_output and "audio" in frames.multimodal_output:
             audio = frames.multimodal_output["audio"]
             audio_sample_rate = frames.multimodal_output.get("audio_sample_rate", audio_sample_rate)
-        if frames.is_pipeline_output and frames.request_output is not None:
-            inner_output = frames.request_output
+        if frames.is_pipeline_output and frames is not None:
+            inner_output = frames
             if isinstance(inner_output, OmniRequestOutput):
                 if inner_output.multimodal_output and "audio" in inner_output.multimodal_output:
                     audio = inner_output.multimodal_output["audio"]
@@ -630,8 +666,7 @@ def main():
                 frame_tensor = frame_tensor[0]
             if frame_tensor.dim() == 3 and frame_tensor.shape[0] in (3, 4):
                 frame_tensor = frame_tensor.permute(1, 2, 0)
-            if frame_tensor.is_floating_point():
-                frame_tensor = frame_tensor.clamp(-1, 1) * 0.5 + 0.5
+            frame_tensor = _normalize_float_tensor(frame_tensor, output_tensor_range)
             return frame_tensor.float().numpy()
         if isinstance(frame, np.ndarray):
             frame_array = frame
@@ -683,8 +718,7 @@ def main():
                 video_tensor = video_tensor[0]
         elif video_tensor.dim() == 4 and video_tensor.shape[0] in (3, 4):
             video_tensor = video_tensor.permute(1, 2, 3, 0)
-        if video_tensor.is_floating_point():
-            video_tensor = video_tensor.clamp(-1, 1) * 0.5 + 0.5
+        video_tensor = _normalize_float_tensor(video_tensor, output_tensor_range)
         video_array = video_tensor.float().numpy()
     elif isinstance(frames, np.ndarray):
         video_array = frames

examples/offline_inference/text_to_video/text_to_video_lingbot.py

@@ -1,131 +0,0 @@
-# SPDX-License-Identifier: Apache-2.0
-# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
-
-from __future__ import annotations
-
-import argparse
-import time
-from pathlib import Path
-from typing import Any
-
-import numpy as np
-import torch
-
-from vllm_omni.diffusion.data import DiffusionParallelConfig
-from vllm_omni.entrypoints.omni import Omni
-from vllm_omni.inputs.data import OmniDiffusionSamplingParams
-from vllm_omni.outputs import OmniRequestOutput
-from vllm_omni.platforms import current_omni_platform
-
-
-def parse_args() -> argparse.Namespace:
-    parser = argparse.ArgumentParser(description="Generate text-to-video with a LingBot-Video checkpoint.")
-    parser.add_argument("--model", default="robbyant/lingbot-video-dense-1.3b")
-    parser.add_argument("--prompt", default="a robotic arm picks up a red block")
-    parser.add_argument("--negative-prompt", default=None)
-    parser.add_argument("--output", default="lingbot_video_output.mp4")
-    parser.add_argument("--height", type=int, default=192)
-    parser.add_argument("--width", type=int, default=320)
-    parser.add_argument("--num-frames", type=int, default=9)
-    parser.add_argument("--num-inference-steps", type=int, default=2)
-    parser.add_argument("--guidance-scale", type=float, default=3.0)
-    parser.add_argument("--flow-shift", type=float, default=3.0)
-    parser.add_argument("--seed", type=int, default=42)
-    parser.add_argument("--fps", type=int, default=24)
-    parser.add_argument("--output-type", choices=["pt", "np"], default="pt")
-    parser.add_argument("--batch-cfg", action="store_true")
-    return parser.parse_args()
-
-
-def _peak_memory_mb(output: Any) -> float:
-    result = output[0] if isinstance(output, list) and output else output
-    return float(getattr(result, "peak_memory_mb", 0.0) or 0.0)
-
-
-def _extract_video(output: Any) -> Any:
-    if isinstance(output, list):
-        output = output[0] if output else None
-    if isinstance(output, OmniRequestOutput):
-        if output.final_output_type != "image":
-            raise ValueError(f"Unexpected output type {output.final_output_type!r}.")
-        if not output.images:
-            raise ValueError("No video frames found in OmniRequestOutput.")
-        return output.images[0] if len(output.images) == 1 else output.images
-    return output
-
-
-def _to_frame_array(video: Any) -> np.ndarray:
-    if isinstance(video, torch.Tensor):
-        tensor = video.detach().cpu()
-        if tensor.dim() == 5:
-            tensor = tensor[0]
-        if tensor.dim() == 4 and tensor.shape[-1] not in (3, 4):
-            if tensor.shape[0] in (3, 4):
-                tensor = tensor.permute(1, 2, 3, 0)
-            elif tensor.shape[1] in (3, 4):
-                tensor = tensor.permute(0, 2, 3, 1)
-        if tensor.is_floating_point():
-            if float(tensor.min()) < 0.0:
-                tensor = tensor.clamp(-1, 1) * 0.5 + 0.5
-            else:
-                tensor = tensor.clamp(0, 1)
-        return tensor.float().numpy()
-    if isinstance(video, np.ndarray):
-        array = video[0] if video.ndim == 5 else video
-        if np.issubdtype(array.dtype, np.integer):
-            return array.astype(np.float32) / 255.0
-        return array.astype(np.float32, copy=False)
-    if isinstance(video, list):
-        return np.stack([_to_frame_array(frame) for frame in video], axis=0)
-    return np.asarray(video, dtype=np.float32)
-
-
-def main() -> None:
-    args = parse_args()
-    generator = torch.Generator(device=current_omni_platform.device_type).manual_seed(args.seed)
-    omni = Omni(
-        model=args.model,
-        model_class_name="LingBotVideoPipeline",
-        flow_shift=args.flow_shift,
-        parallel_config=DiffusionParallelConfig(),
-    )
-
-    prompt: dict[str, Any] = {
-        "prompt": args.prompt,
-        "modalities": ["video"],
-        "num_frames": args.num_frames,
-    }
-    if args.negative_prompt is not None:
-        prompt["negative_prompt"] = args.negative_prompt
-
-    sampling_params = OmniDiffusionSamplingParams(
-        height=args.height,
-        width=args.width,
-        num_frames=args.num_frames,
-        num_inference_steps=args.num_inference_steps,
-        guidance_scale=args.guidance_scale,
-        generator=generator,
-        output_type=args.output_type,
-        extra_args={"batch_cfg": args.batch_cfg, "shift": args.flow_shift},
-    )
-
-    start = time.perf_counter()
-    output = omni.generate(prompt, sampling_params)
-    elapsed = time.perf_counter() - start
-    print(f"Total generation time: {elapsed:.4f} seconds ({elapsed * 1000:.2f} ms)")
-    peak_mb = _peak_memory_mb(output)
-    if peak_mb:
-        print(f"Worker peak GPU memory (reserved): {peak_mb:.2f} MiB ({peak_mb / 1024:.2f} GiB)")
-
-    video = _to_frame_array(_extract_video(output))
-    output_path = Path(args.output)
-    output_path.parent.mkdir(parents=True, exist_ok=True)
-    from diffusers.utils import export_to_video
-
-    export_to_video(list(video), str(output_path), fps=args.fps)
-    print(f"Saved generated video to {output_path}")
-    omni.close()
-
-
-if __name__ == "__main__":
-    main()

examples/offline_inference/x_to_video_audio/x_to_video_audio.py

@@ -138,7 +138,7 @@ def _extract_peak_memory_mb(result: Any) -> float:
         return 0.0
     val = getattr(result, "peak_memory_mb", 0.0)
     if not val:
-        inner = getattr(result, "request_output", None)
+        inner = result
         if isinstance(inner, list):
             inner = inner[0] if inner else None
         val = getattr(inner, "peak_memory_mb", 0.0)

examples/online_serving/text_to_speech/README.md

@@ -605,6 +605,13 @@ python qwen3_tts/streaming_speech_client.py \
 The client writes one PCM file per sentence and a matching
 `sentence_XXX_timestamps.json` sidecar.
 
+Non-streaming requests can also ask for timestamps: pass
+`"word_timestamps": true` to `POST /v1/audio/speech` and read the
+`X-Word-Timestamps` response header (JSON list of `{word, start_ms, end_ms}`,
+ASCII-escaped). Past 4 KB the header is replaced by
+`X-Word-Timestamps-Omitted: oversize; bytes=<n>; limit=4096` and the audio
+still returns — use the WebSocket path for long transcripts.
+
 To *see* the alignment instead of reading a JSON sidecar, run the
 word-timestamp Gradio demo (server must be launched with `--forced-aligner`):
 ```bash

mkdocs.yml

@@ -73,6 +73,8 @@ plugins:
   - awesome-nav
   - redirects:
       redirect_maps:
+        community/meetups.md: community/meetings.md
+        community/volunteers.md: community/contact_us.md
         user_guide/diffusion/request_batching.md: user_guide/diffusion/execution_modes.md
         user_guide/diffusion/step_execution.md: user_guide/diffusion/execution_modes.md
         user_guide/diffusion/cpu_offload_diffusion.md: user_guide/diffusion/cpu_offload.md
@@ -111,6 +113,7 @@ plugins:
         - "vllm_omni.entrypoints.openai"  # avoid importing vllm in mkdocs building
         - "vllm_omni.entrypoints.openai.protocol"  # avoid importing vllm in mkdocs building
         - "vllm_omni.experimental"  # avoid importing optional serving deps (openai, fastapi, uvicorn, httpx) in mkdocs building
+        - "vllm_omni.model_executor.models.nemotron_voicechat.nemo_vendored"  # vendored NeMo code; upstream docstrings trip griffe strict warnings
   - mkdocstrings:
       handlers:
         python:

pyproject.toml

@@ -206,6 +206,12 @@ ignore = [
 # These files keep upstream conventions (star imports, long lines, math-symbol
 # argument names) so they stay easy to diff against upstream releases.
 "vllm_omni/model_executor/models/minicpmo_4_5/minicpmo_4_5_omni_llm.py" = ["E402", "E501", "F403", "F405", "N803"]
+# NemotronVoiceChat inference modules vendored from NVIDIA-NeMo/Speech (branch
+# nemotron-labs-voicechat). Numerics-bearing code is kept byte-close to
+# upstream to stay diffable and parity-safe, so upstream style (long lines,
+# legacy typing, whitespace, unused-import shims) is exempted. TID251 and the
+# F-correctness rules still apply.
+"vllm_omni/model_executor/models/nemotron_voicechat/nemo_vendored/**" = ["E501", "E721", "E741", "F401", "F841", "I001", "N803", "N814", "UP006", "UP007", "UP008", "UP011", "UP032", "UP035", "W291", "W293"]
 "vllm_omni/experimental/fullduplex/joyvl/decision/prompts.py" = ["E501"]  # System/summarizer prompts are long prose lines
 
 [tool.ruff.lint.flake8-tidy-imports.banned-api]
@@ -314,6 +320,10 @@ extend-ignore-identifiers-re = [
     ".*[Nn][Dd]3.*",
     ".*updator.*",
     "byt5.*",
+    # NemotronVoiceChat vendored triton kernel: dout/DOUT abbreviate d_out
+    # (output feature dim), not "doubt".
+    ".*dout.*",
+    ".*DOUT.*",
 ]
 extend-ignore-re = [
     "\\.\\.\\.n,d->\\.\\.\\.nd",
@@ -334,6 +344,9 @@ byt5 = "byt5"
 # "seeked" is the standard HTML media element DOM event name (fires when a
 # seek completes), used by the word-timestamps Gradio demo. Not a typo.
 seeked = "seeked"
+# Ryan Leary: author credited in the NemotronVoiceChat vendored NeMo
+# features.py copyright header. A surname, not a typo of "leery".
+Leary = "Leary"
 # IndexTTS 2.5 language codes and speech-emotion-recognition event token.
 fo = "fo"
 ba = "ba"

recipes/LTX/LTX-2.md

@@ -4,11 +4,20 @@
 
 ## Pipelines
 
-| Model | Checkpoint | Task | `--model-class-name` | Batching |
-|---|---|---|---|---|
-| LTX-2 | `Lightricks/LTX-2` | One-stage T2V/I2V | `LTX2Pipeline` | Yes |
-| LTX-2 distilled | `rootonchair/LTX-2-19b-distilled` | Two-stage T2V/I2V | `LTX2DistilledPipeline` | No |
-| LTX-2.3 | `diffusers/LTX-2.3-Diffusers` | One-stage T2V/I2V | `LTX2Pipeline` | Yes |
+| `--model-class-name` | Task | Required checkpoint repositories |
+|---|---|---|
+| `LTX2Pipeline` | LTX-2 one-stage T2V/I2V | `Lightricks/LTX-2` |
+| `LTX2TwoStagePipeline` | LTX-2 ordinary two-stage T2V/I2V | `Lightricks/LTX-2` |
+| `LTX2DistilledPipeline` | LTX-2 full-distilled two-stage T2V/I2V | `rootonchair/LTX-2-19b-distilled` |
+| `LTX2Pipeline` | LTX-2.3 one-stage T2V/I2V | `diffusers/LTX-2.3-Diffusers` |
+| `LTX2TwoStagePipeline` | LTX-2.3 ordinary two-stage T2V/I2V | `diffusers/LTX-2.3-Diffusers`<br>`Lightricks/LTX-2.3` |
+| `LTX2DistilledPipeline` | LTX-2.3 full-distilled two-stage T2V/I2V | `diffusers/LTX-2.3-Distilled-Diffusers`<br>`Lightricks/LTX-2.3` |
+
+Repositories in the table are download units. A full pipeline repository
+contains the Transformer, text encoder, connectors, VAEs, vocoder, scheduler,
+and tokenizer; an additional repository supplies LoRA or upsampler sidecars.
+The runtime first searches the model root for sidecars under their official
+filenames, then downloads them from the matching Lightricks Hub repository.
 
 `LTX2Pipeline` is the unified one-stage entry. Checkpoint metadata selects the
 LTX-2 or LTX-2.3 profile; omitting an image selects T2V, while one initial
@@ -16,10 +25,10 @@ image selects I2V. Both one-stage repositories declare this class, so
 `--model-class-name` is optional. LTX-2.3 requires the Diffusers checkpoint;
 the raw `Lightricks/LTX-2.3` safetensors repository is not directly loadable.
 
-`LTX2DistilledPipeline` is the unified distilled entry: omit `image` for T2V
-or provide one initial image for I2V. As in the official LTX pipelines,
-distilled mode is selected explicitly rather than inferred from the checkpoint
-name or metadata; always pass `--model-class-name LTX2DistilledPipeline`.
+`LTX2TwoStagePipeline` samples the regular model at half resolution, upsamples,
+then refines with the distilled LoRA. `LTX2DistilledPipeline` uses a fully
+merged distilled Transformer in both stages. Both entries support T2V and I2V;
+select their class explicitly.
 
 ## API Migration
 
@@ -68,24 +77,28 @@ The model recipe also supplies the default negative prompt. Top-level
 API defaults `num_frames` to `1`, so set it explicitly; the offline LTX scripts
 default to `121`.
 
-## Distilled Two-Stage Defaults
+## Two-Stage Defaults
 
-| Parameter | Value |
-|---|---:|
-| Final width × height | 1536 × 1024 |
-| Stage 1 width × height | 768 × 512 |
-| Frames / frame rate | 121 / 24 |
-| Stage 1 / Stage 2 denoise steps | 8 / 3 |
-| Guidance | Fixed positive-only |
+| Parameter | Ordinary | Full-distilled |
+|---|---:|---:|
+| Final width × height | 1536 × 1024 | 1536 × 1024 |
+| Stage 1 width × height | 768 × 512 | 768 × 512 |
+| Frames / frame rate | 121 / 24 | 121 / 24 |
+| Stage 1 / Stage 2 steps | 40 (LTX-2) or 30 (LTX-2.3) / 3 | 8 / 3 |
+| Guidance | Stage 1 guided; Stage 2 positive-only | Fixed positive-only |
 
-The dimensions passed to the API are the final output dimensions and must be
-divisible by 64. Both one- and two-stage requests require `num_frames = 8k+1`.
-The distilled recipe fixes both sigma schedules; `num_inference_steps` must be
-`8` when supplied.
+API dimensions are final dimensions and must be divisible by 64. All LTX
+requests require `num_frames = 8k+1`. Ordinary Stage 1 uses the LTX-2 or
+LTX-2.3 one-stage defaults shown above. Distilled schedules are fixed, so
+`num_inference_steps`, when supplied, must be `8`. Both entries reject custom
+sigmas and input latents.
+
+Ordinary two-stage uses layer-fused LoRA for an unquantized BF16 Transformer
+and automatically switches to dynamic LoRA when quantization is enabled.
 
 ## Serving
 
-Start either checkpoint:
+Start either one-stage checkpoint:
 
 ```bash
 vllm serve Lightricks/LTX-2 --omni --stage-init-timeout 600
@@ -95,11 +108,19 @@ vllm serve Lightricks/LTX-2 --omni --stage-init-timeout 600
 vllm serve diffusers/LTX-2.3-Diffusers --omni --stage-init-timeout 600
 ```
 
-Start the distilled checkpoint with its two-stage entry:
+Start a two-stage checkpoint with its explicit class:
 
 ```bash
 vllm serve rootonchair/LTX-2-19b-distilled --omni \
   --model-class-name LTX2DistilledPipeline --stage-init-timeout 600
+# LTX-2.3 full-distilled; the v1.1 x2 upsampler is resolved when absent
+vllm serve diffusers/LTX-2.3-Distilled-Diffusers --omni \
+  --model-class-name LTX2DistilledPipeline --stage-init-timeout 600
+# Ordinary LTX-2.3 two-stage
+vllm serve diffusers/LTX-2.3-Diffusers --omni \
+  --model-class-name LTX2TwoStagePipeline \
+  --enable-layerwise-offload \
+  --stage-init-timeout 600
 ```
 
 The same server handles T2V and I2V. A T2V request using the selected recipe's
@@ -135,8 +156,9 @@ together with `input_reference`.
 
 ## Guidance
 
-LTX supports independent video/audio CFG, spatio-temporal guidance (STG),
-cross-modality guidance, and rescaling:
+One-stage and ordinary Stage 1 support independent video/audio CFG,
+spatio-temporal guidance (STG), cross-modality guidance, and rescaling.
+Distilled stages and ordinary Stage 2 are fixed positive-only.
 
 | Parameter | Default | Effect | Alias |
 |---|---:|---|---|
@@ -172,9 +194,9 @@ complete guidance plan in parallel. Despite the legacy `cfg` name, it covers
 text CFG, STG, and cross-modality guidance passes; guidance rescaling is
 applied after all pass predictions are gathered.
 
-The default one-stage recipe has four Transformer passes per denoise step:
-`cond`, `uncond`, `ptb` (STG), and `mod` (cross-modality). The useful balanced
-configurations are therefore:
+The default one-stage recipe and ordinary Stage 1 have four Transformer passes
+per denoise step: `cond`, `uncond`, `ptb` (STG), and `mod`
+(cross-modality). The useful balanced configurations are therefore:
 
 | `--cfg-parallel-size` | Passes per rank | Guidance-slot utilization | Notes |
 |---:|---:|---:|---|
@@ -195,9 +217,8 @@ vllm serve diffusers/LTX-2.3-Diffusers --omni \
 ```
 
 The total device count is the product of `cfg_parallel_size` and the other
-configured parallel dimensions. Distilled pipelines use positive-only
-guidance, so `cfg_parallel_size > 1` does not provide guidance speedup for
-them.
+configured parallel dimensions. Positive-only distilled phases do not benefit
+from `cfg_parallel_size > 1`.
 
 ### Python API
 
@@ -242,22 +263,22 @@ noted below.
 | `image` | image or batch, `None` | Direct value wins over request images; no image selects T2V. I2V accepts one image per prompt, and a batch cannot mix T2V/I2V. |
 | `prompt` | string or list, `None` | Positive-text fallback; request prompts win. Mutually exclusive with `prompt_embeds`. |
 | `negative_prompt` | string or list, `None` | Fallback after request values and before the recipe default; mutually exclusive with negative embeddings. |
-| `height` | `int`, `None` | Request → direct value → recipe default; divisible by 32 one-stage or 64 distilled. |
+| `height` | `int`, `None` | Request → direct value → recipe default; divisible by 32 one-stage or 64 two-stage. |
 | `width` | `int`, `None` | Same precedence and alignment as `height`. |
 | `num_frames` | `int`, `None` | Request → direct value → recipe default; must be `8k+1` and also determines audio duration with `frame_rate`. |
 | `frame_rate` | `float`, `None` | Request `frame_rate` → request `fps` → direct value → recipe default. |
-| `num_inference_steps` | `int`, `None` | Request → direct value → recipe default; minimum 2 one-stage, fixed at 8 for distilled Stage 1. Custom one-stage `sigmas` determine actual steps. |
+| `num_inference_steps` | `int`, `None` | Request → direct value → recipe default; minimum 2 one-stage and ordinary Stage 1, fixed at 8 for distilled Stage 1. Custom one-stage `sigmas` determine actual steps. |
 | `sigmas` | list of float, `None` | One-stage only. Request values win; every request in a fused batch must use the same schedule. |
 | `timesteps` | list of int, `None` | Compatibility slot; LTX accepts only `None`. Use `sigmas`. |
-| `guidance_scale` | `float`, `None` | One-stage common video/audio CFG fallback; an explicit request value wins. Distilled two-stage uses fixed positive-only guidance. |
+| `guidance_scale` | `float`, `None` | One-stage and ordinary Stage 1 common video/audio CFG fallback; an explicit request value wins. Distilled phases use fixed positive-only guidance. |
 | `guidance_rescale` | `float`, `None` | Accepts only `None` or `0.0`; use the modality rescale fields. |
 | `noise_scale` | `float`, `0.0` | Compatibility slot; LTX accepts only `0.0`. |
 | `num_videos_per_prompt` | `int`, `1` | Output-count fallback; positive request `num_outputs_per_prompt` wins. |
 | `generator` | generator or list, `None` | Explicit RNG; otherwise request generators/seeds are collated. Lists must match the effective output batch. |
-| `latents` | tensor, `None` | Request tensors win. One-stage accepts packed `[B, S, C]` and validated unpacked video layouts. |
-| `audio_latents` | tensor, `None` | One-stage initial audio latents; request tensors win and are collated. |
+| `latents` | tensor, `None` | One-stage only. Request tensors win; packed `[B, S, C]` and validated unpacked video layouts are accepted. |
+| `audio_latents` | tensor, `None` | One-stage only. Request tensors win and are collated. |
 | `prompt_embeds` | tensor, `None` | Precomputed positive conditioning; requires `prompt_attention_mask` and cannot accompany `prompt`. |
-| `negative_prompt_embeds` | tensor, `None` | One-stage precomputed negative conditioning; requires its mask and cannot accompany `negative_prompt`. |
+| `negative_prompt_embeds` | tensor, `None` | One-stage and ordinary Stage 1 conditioning; requires its mask and cannot accompany `negative_prompt`. |
 | `prompt_attention_mask` | tensor, `None` | Mask for positive embeddings; request `prompt_attention_mask` or `attention_mask` wins. |
 | `negative_prompt_attention_mask` | tensor, `None` | Mask for negative embeddings; request negative mask fields win. |
 | `decode_timestep` | float or list, `0.0` | Video-VAE decode timestep; request value wins. Lists may match 1, prompt batch, or output batch. |
@@ -273,13 +294,13 @@ request prompt payload; LTX guidance fields live in sampling `extra_args`.
 
 ### Recipe-Specific Request Capabilities
 
-| Override | One-stage | Distilled two-stage |
-|---|---|---|
-| Guidance | Supported | Fixed positive-only |
-| Negative prompt/embeddings | Supported | Rejected |
-| `num_inference_steps` | Supported | Fixed at 8 for Stage 1; Stage 2 uses 3 |
-| Custom `sigmas` | Supported | Rejected; both phases use fixed schedules |
-| Video/audio latents | Supported | Rejected |
+| Override | One-stage | Ordinary two-stage | Distilled two-stage |
+|---|---|---|---|
+| Guidance | Supported | Stage 1 only; Stage 2 is positive-only | Fixed positive-only |
+| Negative prompt/embeddings | Supported | Supported by Stage 1 | Rejected |
+| `num_inference_steps` | Supported | Controls Stage 1; Stage 2 uses 3 | Fixed at 8 for Stage 1; Stage 2 uses 3 |
+| Custom `sigmas` | Supported | Rejected | Rejected; both phases use fixed schedules |
+| Video/audio latents | Supported | Rejected | Rejected |
 
 These capability checks apply equally to direct `forward` keywords and
 values in `OmniDiffusionSamplingParams`; unsupported values fail instead of
@@ -309,6 +330,10 @@ bundled offline CLI do not currently expose `sigmas`.
   `--max-num-seqs 1`.
 - `--cfg-parallel-size` shards the complete LTX guidance plan, including STG,
   modality guidance, and rescale-compatible prediction gathering.
+- Sequence parallelism may pad audio latents. Pure Ulysses masks the padding;
+  Ring cannot, so audio length must be SP-divisible. Use `ring_degree=1` or a
+  divisible request shape.
+- Cache-DiT is one-stage only; multi-stage configurations are rejected.
 
 ## Operational Notes
 
@@ -323,14 +348,15 @@ bundled offline CLI do not currently expose `sigmas`.
   request parameter.
 - For benchmarks, use `tests/dfx/perf/tests/test_ltx2_vllm_omni.json` with
   `tests/dfx/perf/scripts/run_diffusion_benchmark.py`.
-- Current two-stage support is limited to the distilled checkpoint; official
-  LTX two-stage/HQ execution remains out of scope.
+- Ordinary and full-distilled two-stage T2V/I2V are supported; HQ execution
+  remains out of scope.
 
 ## References
 
 - <https://huggingface.co/Lightricks/LTX-2>
 - <https://huggingface.co/Lightricks/LTX-2.3>
 - <https://huggingface.co/diffusers/LTX-2.3-Diffusers>
+- <https://huggingface.co/diffusers/LTX-2.3-Distilled-Diffusers>
 - [Online video generation](../../docs/user_guide/examples/online_serving/text_to_video.md)
 - [Diffusion execution modes](../../docs/user_guide/diffusion/execution_modes.md)
 - [T2V offline example](../../examples/offline_inference/text_to_video/text_to_video.md)

recipes/NVIDIA/NemotronLabs-VoiceChat.md

@@ -0,0 +1,113 @@
+# NemotronLabs VoiceChat 11B
+
+> Offline speech-to-speech: a 16 kHz user utterance in, the agent's spoken reply
+> (text + 22.05 kHz WAV) out, on a 3-stage vLLM-Omni pipeline.
+
+## Summary
+
+- Vendor: NVIDIA
+- Model: [`nvidia/NVIDIA-NemotronLabs-VoiceChat-11B`](https://huggingface.co/nvidia/NVIDIA-NemotronLabs-VoiceChat-11B)
+- Task: Speech-to-speech voice chat. The model runs a frame-locked 12.5 Hz
+  timeline: a Conformer + NemotronH hybrid-Mamba thinker emits one text token
+  per acoustic frame, a Gemma3-1B EAR-TTS talker turns the text timeline into
+  31-quantizer RVQ code stacks, and an RVQ-VAE codec decodes them to audio.
+- Mode: Offline single-turn inference (batch=1). Online/duplex serving,
+  function calling, and batch>1 are documented follow-ups.
+- Maintainer: [`@yuekaizhang`](https://github.com/yuekaizhang)
+
+## When to use this recipe
+
+Use this recipe to run a single-turn voice-chat exchange with
+`NVIDIA-NemotronLabs-VoiceChat-11B` on one GPU: you provide a user utterance as
+a WAV file (any sample rate; it is resampled to 16 kHz mono) plus an optional
+spoken-style system prompt, and get back the agent's reply as text and a
+22.05 kHz WAV. The integration is NeMo-free at runtime — the perception
+Conformer, EAR-TTS talker, and RVQ-VAE codec are vendored, dependency-stripped
+NeMo modules (`nemo_vendored/`), so no `nemo_toolkit` install is needed.
+
+## References
+
+- Offline example:
+  [`examples/offline_inference/nemotron_voicechat/end2end.py`](../../examples/offline_inference/nemotron_voicechat/end2end.py)
+- Model modules (thinker / talker / code2wav / vendored NeMo):
+  [`vllm_omni/model_executor/models/nemotron_voicechat/`](../../vllm_omni/model_executor/models/nemotron_voicechat/)
+- Staged pipeline config:
+  [`vllm_omni/deploy/nemotron_labs_voicechat.yaml`](../../vllm_omni/deploy/nemotron_labs_voicechat.yaml)
+- Upstream model card:
+  [`nvidia/NVIDIA-NemotronLabs-VoiceChat-11B`](https://huggingface.co/nvidia/NVIDIA-NemotronLabs-VoiceChat-11B)
+- Reference implementation: NVIDIA-NeMo/Speech, branch `nemotron-labs-voicechat`
+
+## Pipeline
+
+| stage | arch | dtype | role |
+|---|---|---|---|
+| 0 thinker | `NemotronVoiceChatThinkerForConditionalGeneration` (LLM_AR) | fp32 | WAV + system prompt -> frame-locked text-token timeline (+ function channel) |
+| 1 talker | `NemotronVoiceChatTalker` (LLM_AR) | fp32 | text timeline -> 31-quantizer RVQ code stacks (one per 80 ms frame) |
+| 2 code2wav | `NemotronVoiceChatCode2Wav` (LLM_GENERATION) | fp32 | RVQ-VAE decode -> 22.05 kHz PCM |
+
+Stages 0/1 default to fp32 for exact parity with the NeMo reference
+implementation (greedy decoding matches it token for token on the acceptance
+fixture). The deploy yaml documents a ~2x-faster bf16 thinker option whose
+output stayed within one word of the reference in testing.
+
+## Hardware Support
+
+## GPU
+
+### 1x H100 80GB
+
+#### Environment
+
+- OS: Linux
+- Python: 3.12
+- vLLM version: 0.26.0
+- vLLM-Omni version or commit: this PR / current `main`
+
+#### Command
+
+```bash
+# Tokenizer: the checkpoint ships no HF tokenizer; it resolves from the
+# nvidia/NVIDIA-Nemotron-Nano-9B-v2 HF id automatically. For air-gapped runs,
+# point NEMOTRON_VOICECHAT_LLM_PATH at a local snapshot of that repo instead.
+python examples/offline_inference/nemotron_voicechat/end2end.py \
+    --checkpoint /path/to/NVIDIA-NemotronLabs-VoiceChat-11B \
+    --wav /path/to/user_question.wav \
+    --output-dir results/nemotron_voicechat
+```
+
+#### Verification
+
+```bash
+ls results/nemotron_voicechat
+# <stem>_output.txt          the agent reply as text
+# <stem>_output.wav          the agent reply as 22.05 kHz audio
+# <stem>_text_tokens.json    the frame-locked text-token timeline
+```
+
+The reply text should read as a coherent spoken-style answer to the question in
+the input WAV, and the WAV should transcribe to (approximately) the same text
+with any ASR model.
+
+#### Notes
+
+- Memory usage: the shipped yaml runs all three stages on one GPU
+  (`gpu_memory_utilization` 0.62 / 0.12 / 0.06); peak usage is dominated by the
+  fp32 thinker. The fp32 default has a hard floor of roughly 43 GB of thinker
+  weights alone (9B backbone + 587M `embed_tokens` + 587M `function_head` +
+  0.6B Conformer), so 48 GB cards cannot run it — use the bf16 thinker option
+  documented in the deploy yaml on anything smaller than an 80 GB part.
+- Input sizing: the timeline is frame-locked, so the reply budget IS the input
+  duration. The acoustic channel trails the text channel; if the WAV does not
+  carry enough trailing silence for the reply to finish, the spoken answer is
+  truncated silently. Leave generous trailing silence (a question ending at
+  ~4.5 s truncated in an 8 s WAV but completed cleanly in 16 s); the offline
+  example warns when the text channel is still speaking near the last frame.
+- Key flags: sampling is greedy end to end. The thinker is frame-locked —
+  `max_tokens` equals the acoustic frame count with `ignore_eos=True`. Do NOT
+  set `min_tokens` on the thinker: the tokenizer's EOS token is also the
+  frame-locked PAD/silence token, so masking it forces the model to babble
+  instead of pausing.
+- The talker's `max_tokens` is 16383 (its stage prompt is one placeholder
+  token, and the stage context is 16384).
+- Known limitations: batch=1 only; offline single turn (no online/duplex
+  serving yet); the function-call channel is decoded but not yet acted on.

recipes/README.md

@@ -66,6 +66,7 @@ recipes/
 | [`OpenBMB/VoxCPM2.md`](./OpenBMB/VoxCPM2.md) | Online + offline TTS with native AR pipeline (48 kHz, 30+ languages) | 1x RTX 4090 24GB |
 | [`OpenMOSS/MOSS-TTS.md`](./OpenMOSS/MOSS-TTS.md) | Online + offline multilingual TTS (MOSS-TTS family, 8B) | 1x H100 80GB |
 | [`NVIDIA/Nemotron-Labs-Audex.md`](./NVIDIA/Nemotron-Labs-Audex.md) | TTS / text-to-audio / audio understanding / cascaded S2S (Audex 2B + 30B-A3B) | 1x H100 80GB |
+| [`NVIDIA/NemotronLabs-VoiceChat.md`](./NVIDIA/NemotronLabs-VoiceChat.md) | Offline speech-to-speech voice chat (11B, frame-locked 12.5 Hz, 3-stage thinker/talker/code2wav) | 1x H100 80GB |
 | [`Qwen/Qwen-Image.md`](./Qwen/Qwen-Image.md) | Text-to-image serving with step-wise continuous batching replay and ModelOpt mixed FP8/NVFP4 | 1x A100 80GB / 2x B200 |
 | [`Qwen/Qwen-Image-2512.md`](./Qwen/Qwen-Image-2512.md) | Text-to-image serving with step-wise continuous batching replay and ModelOpt FP8 / mixed FP8/NVFP4 | 1x A800 80GB / 2x B200 |
 | [`Qwen/Qwen-Image-Edit.md`](./Qwen/Qwen-Image-Edit.md) | Text-guided single-image editing | 1x or 2x H200 141GB |

recipes/Robbyant/LingBot-Video.md

@@ -27,7 +27,7 @@ parallel, cache, quantized, or expert-kernel backends.
 - Dense checkpoint: <https://huggingface.co/robbyant/lingbot-video-dense-1.3b>
 - MoE checkpoint: <https://huggingface.co/robbyant/lingbot-video-moe-30b-a3b>
 - Upstream project: <https://github.com/Robbyant/lingbot-video>
-- Related offline example: [`examples/offline_inference/text_to_video/text_to_video_lingbot.py`](../../examples/offline_inference/text_to_video/text_to_video_lingbot.py)
+- Related offline example: [`examples/offline_inference/text_to_video/text_to_video.py`](../../examples/offline_inference/text_to_video/text_to_video.py)
 - Related online video API docs: [`docs/serving/videos_api.md`](../../docs/serving/videos_api.md)
 
 ## Hardware Support
@@ -52,7 +52,7 @@ The MoE path is validated with BF16 expert weights.
 
 ```bash
 CUDA_VISIBLE_DEVICES=0 \
-python examples/offline_inference/text_to_video/text_to_video_lingbot.py \
+python examples/offline_inference/text_to_video/text_to_video.py \
   --model robbyant/lingbot-video-dense-1.3b \
   --prompt "a robotic arm picks up a red block" \
   --output lingbot_t2v.mp4 \
@@ -70,7 +70,7 @@ python examples/offline_inference/text_to_video/text_to_video_lingbot.py \
 
 ```bash
 CUDA_VISIBLE_DEVICES=0 \
-python examples/offline_inference/text_to_video/text_to_video_lingbot.py \
+python examples/offline_inference/text_to_video/text_to_video.py \
   --model robbyant/lingbot-video-moe-30b-a3b \
   --prompt "a robotic arm picks up a red block" \
   --output lingbot_moe_t2v.mp4 \

recipes/Tencent/HunyuanImage-3.0-Instruct.md

@@ -82,7 +82,7 @@ example and the DiT sections below.
 - Optional environment variables:
 
 ```bash
-export CACHE_DIT_VERSION=1.3.0
+export CACHE_DIT_VERSION=1.5.0
 ```
 
 HunyuanImage-3.0 sets the diffusion attention backend to `TORCH_SDPA`

recipes/rednote-hilab/dots.tts.md

@@ -0,0 +1,152 @@
+# dots.tts
+
+> Offline continuous-AR TTS at 48 kHz (rednote-hilab)
+
+## Summary
+
+- Vendor: rednote-hilab
+- Model: `rednote-hilab/dots.tts-soar`
+- Task: Text-to-speech, zero-shot synthesis only
+- Mode: Offline end-to-end example only (not yet wired for online serving —
+  see [Known limitations](#known-limitations))
+- Maintainer: Community
+
+## When to use this recipe
+
+Use this recipe as a known-good starting point for running
+`rednote-hilab/dots.tts-soar` offline on vLLM-Omni on consumer-class GPUs.
+dots.tts is a ~1.7B-parameter continuous-AR TTS model (Qwen2.5-1.5B base LM
++ 344M DiT flow-matching head + 180M AudioVAE) that emits 48 kHz mono audio.
+It follows the same "vLLM-native base LM + side-path computation" pattern as
+VoxCPM2 — single-stage pipeline
+`Qwen2.5-1.5B base LM → DiT (10-step Euler flow matching) → patch_encoder AR
+loopback → AudioVAE (streaming decode)` — with a plain Qwen2 backbone
+instead of MiniCPM4, and no FSQ / residual-LM stage.
+
+This is an early integration (see [Known limitations](#known-limitations)
+below before depending on it for anything beyond offline experimentation).
+
+## References
+
+- Offline end-to-end script:
+  [`examples/offline_inference/text_to_speech/dots_tts/end2end.py`](../../examples/offline_inference/text_to_speech/dots_tts/end2end.py)
+- Example guide:
+  [`examples/offline_inference/text_to_speech/README.md`](../../examples/offline_inference/text_to_speech/README.md#dotstts)
+- Default deploy config:
+  [`vllm_omni/deploy/dots_tts.yaml`](../../vllm_omni/deploy/dots_tts.yaml)
+- Talker / pipeline source:
+  [`vllm_omni/model_executor/models/dots_tts/`](../../vllm_omni/model_executor/models/dots_tts/)
+- Upstream: [rednote-hilab/dots.tts](https://github.com/rednote-hilab/dots.tts)
+
+## Hardware Support
+
+This recipe documents one tested 16 GB consumer-GPU configuration. Other
+vendor sections (ROCm, NPU) and larger-VRAM configurations are welcome as
+community validation lands.
+
+## GPU
+
+### 1 x RTX 5080 16GB (Single GPU, Minimum Recommended)
+
+dots.tts (~1.7B params across the base LM + DiT + AudioVAE + CAM++
+speaker encoder, bfloat16) fits comfortably on a single 16 GB GPU. The
+bundled default config at
+[`vllm_omni/deploy/dots_tts.yaml`](../../vllm_omni/deploy/dots_tts.yaml)
+(`gpu_memory_utilization: 0.8`, `max_num_seqs: 4`, `enforce_eager: true`,
+`enable_prefix_caching: false`) loads cleanly with ~5.1 GiB for model
+weights and ~0.3 GiB peak activation; the remainder of the configured
+budget is available for KV cache. Total resident footprint at idle is
+roughly **7-8 GiB / 16 GB** — the only tight spot in the full CUDA-Graph
+roadmap would be step 8's graph capture (not implemented yet; this
+release runs `enforce_eager: true`, so it doesn't apply today).
+
+#### Environment
+
+- OS: Linux (WSL2)
+- Python: 3.12
+- Driver / runtime: NVIDIA driver 595.95
+- torch: 2.11.0+cu130
+- vLLM: 0.26.0
+- vLLM-Omni: 0.22.1.dev (current `main`)
+
+#### Command
+
+```bash
+python examples/offline_inference/text_to_speech/dots_tts/end2end.py \
+    --model rednote-hilab/dots.tts-soar \
+    --text "Hello, this is a test of dots TTS running on vLLM Omni."
+```
+
+The deploy config at
+[`vllm_omni/deploy/dots_tts.yaml`](../../vllm_omni/deploy/dots_tts.yaml)
+is loaded automatically by the model registry (HF `model_type=dots_tts`).
+Pass `--deploy-config <path>` to override.
+
+#### Verification
+
+**T1 — offline zero-shot synthesis**:
+
+```bash
+python examples/offline_inference/text_to_speech/dots_tts/end2end.py \
+    --model rednote-hilab/dots.tts-soar \
+    --text "Hello, this is a test of dots TTS running on vLLM Omni."
+```
+
+Observed: `output_audio/output.wav`, 3.52 s @ 48 kHz mono. Single
+one-shot process (init → one `generate()` → exit), so the reported
+numbers include engine init and first-request warmup, not just steady-state
+per-step throughput — same caveat as VoxCPM2's recipe. `Inference: 5.52s`,
+`RTF: 1.569`.
+
+Weight-loading breakdown from the same run (all tensors matched, no
+missing/extra keys): 951/951 AudioVAE, 244/244 DiT, 270/270
+patch_encoder, 198 Qwen2, 938/938 CAM++ speaker encoder.
+
+Whisper transcription of the output matched the input text with no
+dropped leading word (confirms the streaming-vocoder patch-boundary fix
+described in [Known limitations](#known-limitations)).
+
+#### Notes
+
+- Output: 48 kHz mono WAV.
+- Checkpoints: `rednote-hilab/dots.tts-soar` is the validated default
+  used throughout this recipe. `rednote-hilab/dots.tts-base` shares the
+  same architecture but is unvalidated in this repo. `rednote-hilab/dots.tts-mf`
+  (MeanFlow, 2-4 step) is not supported — see below.
+- `enforce_eager: true` and `enable_prefix_caching: false` in the deploy
+  config are load-bearing, not just conservative defaults: with prefix
+  caching enabled, vLLM-Omni's prefix-cache multimodal-output merge path
+  does not preserve the `sparse_audio` marker this model relies on to
+  route audio output correctly, and generation silently truncates to a
+  single ~160 ms patch. Do not override `enable_prefix_caching` for this
+  model until that framework-level gap is fixed.
+
+## Known limitations
+
+- **No online serving yet.** dots.tts is not registered in
+  `vllm_omni/entrypoints/openai/tts_adapters/` (the framework other TTS
+  models in this repo use for `/v1/audio/speech`), so `vllm serve
+  rednote-hilab/dots.tts-soar --omni` will start but the OpenAI-compatible
+  speech endpoint does not know how to build request params for it yet.
+  Offline `Omni()` (as used in `end2end.py`) is the only supported path
+  today.
+- **Voice cloning is not wired.** The CAM++ x-vector speaker encoder
+  weights load and are exercised by `load_weights()`, but nothing in the
+  prompt builder consumes a reference audio yet — generation is zero-shot
+  only. `end2end.py` has no `--ref-audio`/`--ref-text` flags.
+- **`dots.tts-mf` (MeanFlow, 2-4 step) checkpoint is not supported.** Only
+  the fixed 10-step Euler DiT sampler used by `dots.tts-soar` /
+  `dots.tts-base` is implemented.
+- **No CUDA graph capture.** The talker runs fully eager. voxcpm2's three
+  captured graphs (base LM decode, CFM solver, VAE decode) have no
+  dots.tts equivalent yet.
+- **Concurrent requests do not scale.** Each request's 10-step DiT Euler
+  integration runs serially in the side path (no cross-request batching,
+  unlike voxcpm2's `enable_batched_cfm`). A community review of this
+  integration measured no throughput gain at `c=4` concurrent requests
+  versus `c=1`.
+- **`SamplingParams.seed` does not control audio-generation randomness.**
+  The DiT's flow-matching noise is deterministically derived per-request
+  from a fixed internal seed (reproducible run-to-run, matching
+  voxcpm2's `deterministic_cfm_seed` convention) rather than from the
+  caller-supplied `seed` field — the same limitation voxcpm2 has today.

requirements/common.txt

@@ -16,7 +16,7 @@ diffusers==0.38.0
 safetensors>=0.8.0
 accelerate==1.12.0
 soundfile>=0.13.1
-cache-dit==1.3.0
+cache-dit==1.5.0
 tqdm>=4.66.0
 torchsde>=0.2.6
 openai-whisper>=20250625
@@ -34,3 +34,5 @@ pydantic-settings>=2.0.0
 # base image does not ship it, so declare it explicitly. The loader also guards
 # this import so a missing gguf no longer breaks all diffusion model loading.
 gguf>=0.10.0
+# Required for running the Cosmos3 model with guardrails enabled (default behavior).
+cosmos-guardrail>=0.3.1

tests/benchmarks/test_daily_omni_local_source.py

@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: Apache-2.0
+"""Offline Daily-Omni sources: local mirrors must not fall back to the Hub id."""
+
+import json
+import os
+import tarfile
+from pathlib import Path
+
+import pytest
+
+from vllm_omni.benchmarks.data_modules.daily_omni_dataset import (
+    daily_omni_local_qa_json,
+    daily_omni_local_videos_dir,
+    resolve_daily_omni_local_root,
+)
+
+pytestmark = [pytest.mark.core_model, pytest.mark.cpu, pytest.mark.benchmark]
+
+
+def _write_qa_json(root: Path) -> Path:
+    qa = root / "qa.json"
+    qa.write_text(json.dumps([{"Question": "q", "Answer": "A", "video_id": "vid0"}]), encoding="utf-8")
+    return qa
+
+
+def test_resolve_local_root_returns_none_for_hub_id() -> None:
+    assert resolve_daily_omni_local_root("liarliar/Daily-Omni") is None
+    assert resolve_daily_omni_local_root("") is None
+    assert resolve_daily_omni_local_root(None) is None
+
+
+def test_plain_local_mirror(tmp_path: Path) -> None:
+    _write_qa_json(tmp_path)
+    (tmp_path / "Videos" / "vid0").mkdir(parents=True)
+
+    root = resolve_daily_omni_local_root(str(tmp_path))
+    assert root == tmp_path.resolve()
+    assert daily_omni_local_qa_json(root) == (tmp_path / "qa.json").resolve()
+    assert daily_omni_local_videos_dir(root) == root / "Videos"
+
+
+def test_hf_cache_dir_resolves_to_snapshot(tmp_path: Path) -> None:
+    cache_dir = tmp_path / "datasets--liarliar--Daily-Omni"
+    snapshot = cache_dir / "snapshots" / "deadbeef"
+    snapshot.mkdir(parents=True)
+    _write_qa_json(snapshot)
+    (cache_dir / "refs").mkdir()
+    (cache_dir / "refs" / "main").write_text("deadbeef", encoding="utf-8")
+
+    root = resolve_daily_omni_local_root(str(cache_dir))
+    assert root == snapshot.resolve()
+    assert daily_omni_local_qa_json(root) == (snapshot / "qa.json").resolve()
+
+
+def test_hf_cache_dir_without_refs_picks_newest_snapshot(tmp_path: Path) -> None:
+    cache_dir = tmp_path / "datasets--liarliar--Daily-Omni"
+    older = cache_dir / "snapshots" / "aaa"
+    newer = cache_dir / "snapshots" / "bbb"
+    older.mkdir(parents=True)
+    newer.mkdir(parents=True)
+    os.utime(older, (1, 1))
+    os.utime(newer, (10, 10))
+
+    assert resolve_daily_omni_local_root(str(cache_dir)) == newer.resolve()
+
+
+def test_videos_tar_is_extracted(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("HF_HOME", str(tmp_path / "hf_home"))
+    root = tmp_path / "mirror"
+    (root / "Videos" / "vid0").mkdir(parents=True)
+    (root / "Videos" / "vid0" / "vid0_video.mp4").write_bytes(b"fake")
+    with tarfile.open(root / "Videos.tar", "w") as tf:
+        tf.add(root / "Videos", arcname="Videos")
+    # Only the tarball is left in the mirror.
+    for child in (root / "Videos").rglob("*"):
+        if child.is_file():
+            child.unlink()
+    (root / "Videos" / "vid0").rmdir()
+    (root / "Videos").rmdir()
+
+    videos_dir = daily_omni_local_videos_dir(root)
+    assert videos_dir is not None
+    assert (videos_dir / "vid0" / "vid0_video.mp4").is_file()
+
+    # Second call reuses the extraction instead of redoing it.
+    assert daily_omni_local_videos_dir(root) == videos_dir
+
+
+def test_missing_qa_json_reports_none(tmp_path: Path) -> None:
+    root = resolve_daily_omni_local_root(str(tmp_path))
+    assert daily_omni_local_qa_json(root) is None
+    assert daily_omni_local_videos_dir(root) is None

tests/benchmarks/test_daily_omni_pack_modes.py

@@ -2,9 +2,8 @@
 
 The ``minicpm-interleave`` mode is an accuracy-critical protocol: MiniCPM-o only reaches
 OpenBMB's reported Daily-Omni score when frames and 1s audio segments arrive strictly
-interleaved, with ``max_slice_nums=1`` / ``use_image_id=False`` and an empty MiniCPM
-system message (not the Qwen system prompt). These tests pin that contract so a refactor
-cannot silently regress the score.
+interleaved, with ``max_slice_nums=1`` / ``use_image_id=False`` and no Qwen system prompt.
+These tests pin that contract so a refactor cannot silently regress the score.
 
 vllm stubs are installed by tests/benchmarks/conftest.py before collection.
 """
@@ -99,22 +98,13 @@ def _stub_extract(monkeypatch, dataset: DailyOmniDataset, counter: list[int]) ->
 # ---------------------------------------------------------------------------
 
 
-@pytest.mark.parametrize(("n", "k"), [(10, 4), (100, 64), (1000, 64), (7, 7), (3, 5), (1, 1)])
-def test_uniform_sample_indices_matches_openbmb_midpoint(n: int, k: int) -> None:
-    """Pin OpenBMB midpoint-bin sampling (not np.linspace endpoints)."""
+@pytest.mark.parametrize(("n", "k"), [(10, 4), (100, 64), (7, 7), (3, 5), (1, 1)])
+def test_uniform_sample_indices_matches_numpy_linspace(n: int, k: int) -> None:
     got = _uniform_sample_indices(n, k)
     if n <= k:
         assert got == list(range(n))
     else:
-        gap = n / k
-        expected = [int(i * gap + gap / 2) for i in range(k)]
-        assert got == expected
-        # Endpoints differ from linspace for typical Daily-Omni downsample sizes.
-        linspace = [int(i) for i in np.linspace(0, n - 1, k, dtype=int)]
-        if n == 1000 and k == 64:
-            assert got[0] == 7 and got[-1] == 992
-            assert linspace[0] == 0 and linspace[-1] == 999
-            assert got != linspace
+        assert got == [int(i) for i in np.linspace(0, n - 1, k, dtype=int)]
 
 
 def test_uniform_sample_indices_non_positive_k() -> None:
@@ -223,16 +213,14 @@ def test_minicpm_interleave_missing_local_video_returns_none(qa_json, tmp_path)
 # ---------------------------------------------------------------------------
 
 
-def test_minicpm_interleave_keeps_empty_system_message(monkeypatch, qa_json, video_dir) -> None:
-    """Official MiniCPM omni mode still sends role=system with empty content."""
+def test_minicpm_interleave_omits_qwen_system_message(monkeypatch, qa_json, video_dir) -> None:
     ds = _make_dataset(qa_json, video_dir, pack_mode="minicpm-interleave", input_mode="all")
     _stub_extract(monkeypatch, ds, [])
     parts, _extra, _position = ds._compose_daily_omni_multimodal(_VIDEO_ID, None)
 
     messages = ds._build_daily_omni_openai_messages(parts, "q?", {"A": "a"})
 
-    assert [m["role"] for m in messages] == ["system", "user"]
-    assert messages[0]["content"][0]["text"] == ""
+    assert [m["role"] for m in messages] == ["user"]
 
 
 def test_qwen_pack_mode_keeps_system_message(qa_json, video_dir) -> None:

tests/config/test_config_factory.py

@@ -6,7 +6,7 @@ Unit tests for StageConfigFactory and related classes.
 
 import importlib
 import warnings
-from dataclasses import dataclass, fields
+from dataclasses import dataclass
 from pathlib import Path
 from unittest.mock import patch
 
@@ -34,9 +34,8 @@ from vllm_omni.config.stage_config import (
     load_deploy_config,
     merge_pipeline_deploy,
     pipeline_cfg_resolver,
-    strip_parent_engine_args,
 )
-from vllm_omni.engine.arg_utils import SHARED_FIELDS, EngineArgs, internal_blacklist_keys
+from vllm_omni.engine.arg_utils import SHARED_FIELDS, internal_blacklist_keys
 
 pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
 
@@ -475,7 +474,7 @@ class TestStageConfigFactory:
         cli_overrides = {
             "gpu_memory_utilization": 0.9,
             "model": "some_model",  # Internal
-            "stage_configs_path": "/path",  # Internal
+            "deploy_config": "/path",  # Internal
             "batch_timeout": 10,  # Internal
         }
 
@@ -483,7 +482,7 @@ class TestStageConfigFactory:
 
         assert overrides["gpu_memory_utilization"] == 0.9
         assert "model" not in overrides
-        assert "stage_configs_path" not in overrides
+        assert "deploy_config" not in overrides
         assert "batch_timeout" not in overrides
 
     def test_per_stage_override_excludes_internal_keys(self):
@@ -525,49 +524,6 @@ class TestStageResolutionHelpers:
         assert "model" not in overrides
         assert "parallel_config" not in overrides
 
-    def test_strip_parent_engine_args_reports_only_surprising_parent_overrides(self):
-        parent_fields = {f.name: f for f in fields(EngineArgs)}
-        filtered, overridden = strip_parent_engine_args(
-            {
-                "model": "some/model",
-                "stage_configs_path": "/tmp/stages.yaml",
-                "tensor_parallel_size": 4,
-                "worker_extension_cls": "some.Extension",
-                "custom_pipeline_args": {"pipeline_class": "demo.Pipeline"},
-            },
-            parent_fields=parent_fields,
-            keep_keys={"worker_extension_cls"},
-            strip_keys={"stage_configs_path"},
-            no_warn_keys={"model"},
-        )
-
-        assert filtered == {
-            "worker_extension_cls": "some.Extension",
-            "custom_pipeline_args": {"pipeline_class": "demo.Pipeline"},
-        }
-        assert overridden == ["tensor_parallel_size"]
-
-    def test_strip_parent_engine_args_keeps_allowed_media_access_controls(self):
-        parent_fields = {f.name: f for f in fields(EngineArgs)}
-        filtered, overridden = strip_parent_engine_args(
-            {
-                "model": "some/model",
-                "stage_configs_path": "/tmp/stages.yaml",
-                "allowed_local_media_path": "/data/qwentts",
-                "allowed_media_domains": ["example.com"],
-            },
-            parent_fields=parent_fields,
-            keep_keys={"allowed_local_media_path", "allowed_media_domains"},
-            strip_keys={"stage_configs_path"},
-            no_warn_keys={"model"},
-        )
-
-        assert filtered == {
-            "allowed_local_media_path": "/data/qwentts",
-            "allowed_media_domains": ["example.com"],
-        }
-        assert overridden == []
-
 
 class TestPipelineDiscovery:
     """Tests for the central pipeline registry (``OMNI_PIPELINES``)."""

tests/config/test_forced_aligner_injection.py

@@ -0,0 +1,71 @@
+import pytest
+
+import vllm_omni.config.pipeline_registry  # noqa: F401  (populate registry)
+from vllm_omni.config.pipeline_registry import OMNI_PIPELINES as _PIPELINE_REGISTRY
+from vllm_omni.config.stage_config import (
+    DeployConfig,
+    StageExecutionType,
+)
+from vllm_omni.model_executor.stage_input_processors.forced_aligner import (
+    POOLING_OUTPUT_DECODER_PATH,
+    TIMESTAMPS_MODALITY,
+)
+from vllm_omni.utils.forced_aligner import _DEFAULT_CONFIG_PATH, inject_forced_aligner_stage
+
+pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
+
+
+def test_inject_appends_pooling_aligner_stage():
+    pipeline = _PIPELINE_REGISTRY["qwen3_tts"]
+    deploy = DeployConfig()
+    n0 = len(pipeline.stages)
+
+    ext_pipeline, ext_deploy = inject_forced_aligner_stage(
+        pipeline, deploy, {"forced_aligner": "/models/Qwen3-ForcedAligner-0.6B"}
+    )
+
+    # A new pooling stage is appended; the original pipeline is unchanged.
+    assert len(pipeline.stages) == n0
+    assert len(ext_pipeline.stages) == n0 + 1
+    # The original deploy config is not mutated either (double-injection safe).
+    assert len(deploy.stages) == 0
+    assert len(ext_deploy.stages) == 1
+    aligner = ext_pipeline.stages[-1]
+    # Pooling stage reuses LLM_AR (+ runner=pooling), no dedicated LLM_POOLING.
+    assert aligner.execution_type == StageExecutionType.LLM_AR
+    assert aligner.final_output is True
+    assert aligner.final_output_type == TIMESTAMPS_MODALITY
+    assert aligner.input_sources == (n0 - 1,)
+    assert aligner.requires_multimodal_data is True
+    assert aligner.owns_tokenizer is True
+
+    # The deploy stage carries the separate aligner checkpoint + decoder hook.
+    ds = ext_deploy.stages[-1]
+    assert ds.engine_extras["model"] == "/models/Qwen3-ForcedAligner-0.6B"
+    assert ds.engine_extras["runner"] == "pooling"
+    assert ds.engine_extras["pooling_output_decoder"] == POOLING_OUTPUT_DECODER_PATH
+
+
+def test_inject_from_config_only():
+    # --forced-aligner-config alone (model in the YAML) must also inject.
+    pipeline = _PIPELINE_REGISTRY["qwen3_tts"]
+    deploy = DeployConfig()
+    n0 = len(pipeline.stages)
+
+    ext_pipeline, ext_deploy = inject_forced_aligner_stage(
+        pipeline, deploy, {"forced_aligner": None, "forced_aligner_config": str(_DEFAULT_CONFIG_PATH)}
+    )
+
+    assert len(ext_pipeline.stages) == n0 + 1
+    assert ext_pipeline.stages[-1].final_output_type == TIMESTAMPS_MODALITY
+    assert ext_deploy.stages[-1].engine_extras["model"] == "Qwen/Qwen3-ForcedAligner-0.6B"
+
+
+def test_inject_noop_without_forced_aligner():
+    pipeline = _PIPELINE_REGISTRY["qwen3_tts"]
+    deploy = DeployConfig()
+
+    ext_pipeline, ext_deploy = inject_forced_aligner_stage(pipeline, deploy, {})
+
+    assert ext_pipeline is pipeline
+    assert len(ext_deploy.stages) == 0

tests/config/test_omni_config.py

@@ -471,6 +471,7 @@ def test_sub_config_fields_match_structured_scopes():
         "trust_remote_code",
         "dtype",
         "attention_backend",
+        "attention_config",
         "moe_backend",
         "hf_overrides",
         "limit_mm_per_prompt",
@@ -513,6 +514,7 @@ def test_sub_config_fields_match_structured_scopes():
         "enable_prefix_caching",
         "disable_hybrid_kv_cache_manager",
         "mm_processor_cache_gb",
+        "mamba_ssm_cache_dtype",
     }
     assert {f.name for f in fields(OmniStageSchedulerConfig)} == {
         "max_num_seqs",

tests/core/sched/test_omni_ar_scheduler_logprobs.py

@@ -27,6 +27,7 @@ _MIXIN_UPDATE_HELPERS = (
     "_attach_finished_request_sets",
     "_attach_scheduler_stats",
     "_capture_omni_connector_output",
+    "_maybe_decode_pooling_output",
 )
 
 
@@ -138,6 +139,7 @@ def _make_scheduler_stub(requests: list[_Request]) -> SimpleNamespace:
         pending_stop_after_extraction=set(),
         waiting_for_transfer_free=set(),
         _new_prompt_len_snapshot={},
+        _pooling_output_decoder=None,
         finished_req_ids=set(),
         finished_req_ids_dict=defaultdict(set),
         kv_cache_manager=SimpleNamespace(take_events=lambda: None),
@@ -267,3 +269,72 @@ def test_invalid_logprobs_finish_only_the_affected_scheduler_request() -> None:
     assert output_by_id["bad"].new_token_ids == []
     assert output_by_id["good"].new_token_ids == [8]
     np.testing.assert_array_equal(output_by_id["good"].new_logprobs.logprob_token_ids[:, 0], [8])
+
+
+def _pooling_model_runner_output(pooler_tensor) -> SimpleNamespace:
+    return SimpleNamespace(
+        sampled_token_ids=[[]],
+        logprobs=None,
+        prompt_logprobs_dict={},
+        pooler_output=[pooler_tensor],
+        num_nans_in_logits=None,
+        kv_connector_output=None,
+        cudagraph_stats=None,
+        req_id_to_index={"req": 0},
+        routed_experts=None,
+    )
+
+
+def _make_pooling_stub(decoder) -> tuple[_Request, SimpleNamespace]:
+    request = _Request("req")
+    request.sampling_params = SimpleNamespace(num_logprobs=None)
+    request.pooling_params = SimpleNamespace()
+    scheduler = _make_scheduler_stub([request])
+    scheduler._pooling_output_decoder = decoder
+    scheduler.vllm_config = SimpleNamespace(model_config=SimpleNamespace(hf_config=None))
+    _bind_request_lifecycle(scheduler, update_request=lambda req, tokens: (tokens, False))
+    return request, scheduler
+
+
+def test_pooling_decode_success_emits_decoded_payload() -> None:
+    import torch
+
+    decoded = torch.tensor([[1, 2]], dtype=torch.int32)
+    request, scheduler = _make_pooling_stub(lambda logits, req, hf: decoded)
+
+    scheduler_output = SimpleNamespace(
+        num_scheduled_tokens={"req": 1},
+        scheduled_spec_decode_tokens={},
+        num_invalid_spec_tokens=0,
+    )
+    outputs = OmniARScheduler.update_from_output(
+        scheduler, scheduler_output, _pooling_model_runner_output(torch.zeros(2, 4))
+    )
+    (output,) = outputs[0].outputs
+
+    assert output.finish_reason is FinishReason.STOP
+    assert output.pooling_output is decoded
+
+
+def test_pooling_decode_failure_finishes_request_with_error() -> None:
+    import torch
+
+    def raising_decoder(logits, req, hf):
+        raise ValueError("boom")
+
+    request, scheduler = _make_pooling_stub(raising_decoder)
+
+    scheduler_output = SimpleNamespace(
+        num_scheduled_tokens={"req": 1},
+        scheduled_spec_decode_tokens={},
+        num_invalid_spec_tokens=0,
+    )
+    outputs = OmniARScheduler.update_from_output(
+        scheduler, scheduler_output, _pooling_model_runner_output(torch.zeros(2, 4))
+    )
+    (output,) = outputs[0].outputs
+
+    # Decoder failure is a request error (500), not an empty success.
+    assert output.finish_reason is FinishReason.ERROR
+    assert output.pooling_output is None
+    assert "pooling output decode failed" in str(request.stop_reason)

tests/core/sched/test_omni_scheduling_coordinator.py

@@ -120,6 +120,9 @@ class TestFullPayloadCoordinatorSelection(unittest.TestCase):
             ("MiMoAudioModel", "code2wav"),
             ("Qwen3TTSCode2Wav", "code2wav"),
             ("MiniCPMO45Code2Wav", "code2wav"),
+            # nemotron_voicechat: sync-path RVQ-VAE decode waits for the
+            # talker's full [frames, 31] code-stack payload.
+            ("NemotronVoiceChatCode2Wav", "code2wav"),
             ("CosyVoice3Model", "cosyvoice3_code2wav"),
             # audex: sync-path TTS decoder (async_chunk: false deploys) and
             # the TTA XCodec1 stage (always sync full-payload).

tests/dfx/perf/tests/test_minicpmo_4_5_ready.json

@@ -0,0 +1,80 @@
+[
+  {
+    "test_name": "test_minicpmo_4_5_ready",
+    "mark": [
+      {
+        "hardware_marks": {
+          "res": {
+            "cuda": "H100",
+            "npu": "A3"
+          },
+          "num_cards": 1
+        }
+      },
+      "core_model",
+      "omni"
+    ],
+    "server_params": {
+      "model": "openbmb/MiniCPM-o-4_5",
+      "extra_cli_args": [
+        "--deploy-config",
+        "vllm_omni/deploy/minicpmo_4_5.yaml",
+        "--trust-remote-code"
+      ]
+    },
+    "benchmark_params": [
+      {
+        "dataset_name": "seed-tts",
+        "dataset_path": "zhaochenyang20/seed-tts-eval",
+        "backend": "openai-chat-omni",
+        "endpoint": "/v1/chat/completions",
+        "num_prompts": [
+          10,
+          40
+        ],
+        "max_concurrency": [
+          1,
+          4
+        ],
+        "no_oversample": true,
+        "trust_remote_code": true,
+        "seed_tts_locale": "en",
+        "extra_body": {
+          "modalities": [
+            "text",
+            "audio"
+          ],
+          "chat_template_kwargs": {
+            "enable_thinking": false,
+            "use_tts_template": true
+          }
+        },
+        "percentile-metrics": "ttft,e2el,audio_ttfp,audio_rtf,audio_duration",
+        "baseline": {
+          "H100": {
+            "request_throughput": [
+              0.7803,
+              1.1008
+            ],
+            "mean_ttft_ms": [
+              166.9764,
+              307.7133
+            ],
+            "mean_e2el_ms": [
+              1361.1682,
+              3800.6332
+            ],
+            "mean_audio_ttfp_ms": [
+              635.8099,
+              1615.6591
+            ],
+            "mean_audio_rtf": [
+              0.3151,
+              0.8568
+            ]
+          }
+        }
+      }
+    ]
+  }
+]

tests/diffusion/batching/test_diffusion_batching.py

@@ -125,7 +125,7 @@ def _extract_images(output: OmniRequestOutput) -> list:
         return output.images
     # When the output comes from the orchestrator pipeline, images may be
     # nested inside request_output.
-    inner = getattr(output, "request_output", None)
+    inner = output
     if inner is not None and hasattr(inner, "images") and inner.images:
         return inner.images
     return []

tests/diffusion/cache/test_teacache.py

@@ -56,10 +56,10 @@ def test_teacache(model_name: str):
         # Extract images from request_output['images']
         first_output = outputs[0]
         assert first_output.final_output_type == "image"
-        if not hasattr(first_output, "request_output") or not first_output.request_output:
+        if not isinstance(first_output, OmniRequestOutput) or not first_output:
             raise ValueError("No request_output found in OmniRequestOutput")
 
-        req_out = first_output.request_output
+        req_out = first_output
         if not isinstance(req_out, OmniRequestOutput) or not hasattr(req_out, "images"):
             raise ValueError("Invalid request_output structure or missing 'images' key")
 

tests/diffusion/distributed/test_sequence_parallel.py

@@ -131,7 +131,7 @@ def _run_inference(
             elapsed_ms = (time.time() - start) * 1000
 
             return InferenceResult(
-                images=outputs[0].request_output.images,
+                images=outputs[0].images,
                 elapsed_ms=elapsed_ms,
             )
     finally:

tests/diffusion/distributed/test_tensor_parallel.py

@@ -49,10 +49,10 @@ def _diff_metrics(a: Image.Image, b: Image.Image) -> tuple[float, float]:
 def _extract_single_image(outputs) -> Image.Image:
     first_output = outputs[0]
     assert first_output.final_output_type == "image"
-    if not hasattr(first_output, "request_output") or not first_output.request_output:
+    if not isinstance(first_output, OmniRequestOutput) or not first_output:
         raise ValueError("No request_output found in OmniRequestOutput")
 
-    req_out = first_output.request_output
+    req_out = first_output
     if not isinstance(req_out, OmniRequestOutput) or not hasattr(req_out, "images"):
         raise ValueError("Invalid request_output structure or missing 'images' key")
 

tests/diffusion/distributed/test_wan_spatial_shard.py

@@ -231,6 +231,128 @@ def test_reshard_from_trimmed_width_pads_invalid_columns(monkeypatch: pytest.Mon
     assert torch.equal(out.flatten(), torch.tensor([4.0, 0.0]))
 
 
+@pytest.mark.core_model
+@pytest.mark.cpu
+@pytest.mark.parametrize("split_dim", ["height", "width"])
+@pytest.mark.parametrize(
+    ("full_extent", "world_size"),
+    [
+        pytest.param(5, 4, id="four-ranks-empty-tail"),
+        pytest.param(20, 8, id="production-eight-ranks-empty-tail"),
+        pytest.param(39, 2, id="two-ranks-partial-tail"),
+    ],
+)
+def test_reshard_from_trimmed_extent_clamps_and_reconstructs(
+    monkeypatch: pytest.MonkeyPatch,
+    split_dim: str,
+    full_extent: int,
+    world_size: int,
+):
+    local_extent = (full_extent + world_size - 1) // world_size
+    shape = (1, 1, 1, full_extent, 1) if split_dim == "height" else (1, 1, 1, 1, full_extent)
+    x = torch.arange(full_extent, dtype=torch.float32).reshape(shape)
+    outputs = []
+
+    for rank in range(world_size):
+        monkeypatch.setattr(wan_spatial_shard, "_rank_world", lambda group, rank=rank: (rank, world_size))
+        token = wan_spatial_shard._SPATIAL_SHARD_CONTEXT.set(
+            wan_spatial_shard.SpatialShardContext(
+                input_extent=full_extent,
+                local_input_extent=local_extent,
+                split_dim=split_dim,
+                rank=rank,
+                world_size=world_size,
+            )
+        )
+        try:
+            out = wan_spatial_shard.reshard_from_trimmed_extent(
+                x,
+                local_extent=local_extent,
+                split_dim=split_dim,
+                group=object(),
+            )
+        finally:
+            wan_spatial_shard._SPATIAL_SHARD_CONTEXT.reset(token)
+
+        start = rank * local_extent
+        valid_extent = min(local_extent, max(0, full_extent - start))
+        expected = torch.zeros(local_extent, dtype=torch.float32)
+        if valid_extent:
+            expected[:valid_extent] = torch.arange(start, start + valid_extent, dtype=torch.float32)
+        assert out.shape[_spatial_dim_for_test(split_dim)] == local_extent
+        assert torch.equal(out.flatten(), expected)
+        outputs.append(out)
+
+    reconstructed = torch.cat(outputs, dim=_spatial_dim_for_test(split_dim))
+    reconstructed = reconstructed.narrow(_spatial_dim_for_test(split_dim), 0, full_extent)
+    assert torch.equal(reconstructed, x)
+
+
+def _spatial_dim_for_test(split_dim: str) -> int:
+    return -2 if split_dim == "height" else -1
+
+
+@pytest.mark.core_model
+@pytest.mark.cpu
+def test_reshard_from_trimmed_extent_rejects_rank_mismatch(monkeypatch: pytest.MonkeyPatch):
+    monkeypatch.setattr(wan_spatial_shard, "_rank_world", lambda group: (1, 2))
+    x = torch.zeros((1, 1, 1, 1, 4), dtype=torch.float32)
+    token = wan_spatial_shard._SPATIAL_SHARD_CONTEXT.set(
+        wan_spatial_shard.SpatialShardContext(
+            input_extent=4,
+            local_input_extent=2,
+            split_dim="width",
+            rank=0,
+            world_size=2,
+        )
+    )
+    try:
+        with pytest.raises(RuntimeError, match="group_rank=1, context_rank=0"):
+            wan_spatial_shard.reshard_from_trimmed_extent(
+                x,
+                local_extent=2,
+                split_dim="width",
+                group=object(),
+            )
+    finally:
+        wan_spatial_shard._SPATIAL_SHARD_CONTEXT.reset(token)
+
+
+@pytest.mark.core_model
+@pytest.mark.cpu
+def test_attention_wrapper_rejects_spatial_extent_change(monkeypatch: pytest.MonkeyPatch):
+    class ShrinkingWanAttentionBlock(torch.nn.Module):
+        def forward(self, x):
+            return x[..., :-1]
+
+    monkeypatch.setattr(wan_spatial_shard, "_rank_world", lambda group: (0, 2))
+    monkeypatch.setattr(
+        wan_spatial_shard,
+        "all_gather_along_dim",
+        lambda x, *, group, dim, dst=None: torch.cat([x, x], dim=dim),
+    )
+    module = ShrinkingWanAttentionBlock()
+    wan_spatial_shard._patch_attention_block(module, group=object(), split_dim="width")
+    x = torch.zeros((1, 1, 1, 1, 2), dtype=torch.float32)
+    token = wan_spatial_shard._SPATIAL_SHARD_CONTEXT.set(
+        wan_spatial_shard.SpatialShardContext(
+            input_extent=4,
+            local_input_extent=2,
+            split_dim="width",
+            rank=0,
+            world_size=2,
+        )
+    )
+    try:
+        with pytest.raises(
+            RuntimeError,
+            match=r"local_extent=2, gathered_extent=4, trimmed_extent=4, output_extent=3",
+        ):
+            module(x)
+    finally:
+        wan_spatial_shard._SPATIAL_SHARD_CONTEXT.reset(token)
+
+
 @pytest.mark.core_model
 @pytest.mark.cpu
 def test_halo_exchange_single_rank_noop(monkeypatch: pytest.MonkeyPatch):

tests/diffusion/layers/test_fused_qk_norm_rope.py

@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import pytest
+import torch
+import torch.nn.functional as F
+from vllm.triton_utils import HAS_TRITON
+
+pytestmark = [pytest.mark.core_model, pytest.mark.cuda, pytest.mark.diffusion]
+
+_HEAD_DIM = 128
+_ROTARY_DIM = 96
+_EPS = 1e-5
+
+
+def _reference(q, k, q_weight, k_weight, rope_table):
+    q = F.rms_norm(q, (_HEAD_DIM,), q_weight, _EPS)
+    k = F.rms_norm(k, (_HEAD_DIM,), k_weight, _EPS)
+    half = _ROTARY_DIM // 2
+    cos = rope_table[..., :half].unsqueeze(1)
+    sin = rope_table[..., half:].unsqueeze(1)
+
+    def apply(x):
+        first = x[..., :half]
+        second = x[..., half:_ROTARY_DIM]
+        return torch.cat(
+            (
+                first * cos - second * sin,
+                second * cos + first * sin,
+                x[..., _ROTARY_DIM:],
+            ),
+            dim=-1,
+        )
+
+    return apply(q), apply(k)
+
+
+@pytest.mark.skipif(not torch.cuda.is_available(), reason="CUDA required")
+@pytest.mark.skipif(not HAS_TRITON, reason="Triton required")
+@pytest.mark.parametrize("seq_len", [1, 257, 1024])
+def test_fused_qk_norm_rope_matches_bf16_reference(seq_len):
+    from vllm_omni.diffusion.layers.fused_qk_norm_rope import (
+        fused_qk_norm_rope,
+    )
+
+    torch.manual_seed(17)
+    heads = 14
+    qkv = torch.randn(
+        seq_len,
+        heads * _HEAD_DIM * 3,
+        device="cuda",
+        dtype=torch.bfloat16,
+    )
+    q = qkv[:, : heads * _HEAD_DIM].view(seq_len, heads, _HEAD_DIM)
+    k = qkv[:, heads * _HEAD_DIM : 2 * heads * _HEAD_DIM].view(
+        seq_len,
+        heads,
+        _HEAD_DIM,
+    )
+    q_weight = torch.randn(_HEAD_DIM, device="cuda", dtype=torch.bfloat16)
+    k_weight = torch.randn(_HEAD_DIM, device="cuda", dtype=torch.bfloat16)
+    freqs = torch.randn(seq_len, _ROTARY_DIM // 2, device="cuda")
+    rope_table = torch.cat((torch.cos(freqs), torch.sin(freqs)), dim=-1).to(torch.bfloat16)
+
+    expected_q, expected_k = _reference(
+        q,
+        k,
+        q_weight,
+        k_weight,
+        rope_table,
+    )
+    actual_q, actual_k = fused_qk_norm_rope(
+        q,
+        k,
+        q_weight,
+        k_weight,
+        rope_table,
+        _EPS,
+    )
+
+    torch.testing.assert_close(actual_q, expected_q, atol=0.0625, rtol=0.02)
+    torch.testing.assert_close(actual_k, expected_k, atol=0.0625, rtol=0.02)

tests/diffusion/lora/test_diffusion_lora.py

@@ -29,10 +29,10 @@ def test_diffusion_model(tmp_path: Path, omni_runner):
             raise ValueError("Empty outputs from Omni.generate()")
         first_output = outputs[0]
         assert first_output.final_output_type == "image"
-        if not hasattr(first_output, "request_output") or not first_output.request_output:
+        if not isinstance(first_output, OmniRequestOutput) or not first_output:
             raise ValueError("No request_output found in OmniRequestOutput")
 
-        req_out = first_output.request_output
+        req_out = first_output
         if not isinstance(req_out, OmniRequestOutput) or not hasattr(req_out, "images"):
             raise ValueError("Invalid request_output structure or missing 'images' key")
         return req_out.images

tests/diffusion/models/ltx2/test_ltx2_latents.py

@@ -23,7 +23,7 @@ def _make_pipeline(pipeline_cls, sequence_parallel_size: int = 1):
     return pipeline
 
 
-def test_prepare_video_latents_samples_directly_in_packed_token_space():
+def test_prepare_video_latents_matches_official_values_and_token_major_layout():
     pipeline = _make_pipeline(LTX2Pipeline)
     pipeline.vae_spatial_compression_ratio = 8
     pipeline.vae_temporal_compression_ratio = 8
@@ -44,6 +44,7 @@ def test_prepare_video_latents_samples_directly_in_packed_token_space():
     )
 
     torch.testing.assert_close(actual, expected, rtol=0, atol=0)
+    assert actual.stride()[1:] == (1, actual.shape[1])
 
 
 def test_prepare_audio_latents_samples_directly_in_packed_token_space():
@@ -81,6 +82,42 @@ def test_prepare_audio_latents_pads_generated_dummy_length_for_sp():
     assert original_num_frames == 1
     assert padded_num_frames == 2
     assert latents.shape == (1, 2, 128)
+    torch.testing.assert_close(latents[:, 1:], torch.zeros_like(latents[:, 1:]))
+
+
+def test_prepare_audio_latents_request_rng_is_invariant_to_sp_padding():
+    pipeline_sp1 = _make_pipeline(LTX2Pipeline, sequence_parallel_size=1)
+    pipeline_sp4 = _make_pipeline(LTX2Pipeline, sequence_parallel_size=4)
+    generator_sp1 = torch.Generator().manual_seed(42)
+    generator_sp4 = torch.Generator().manual_seed(42)
+
+    latents_sp1, _, _ = pipeline_sp1.prepare_audio_latents(
+        batch_size=1,
+        num_channels_latents=2,
+        num_mel_bins=8,
+        audio_latent_length=3,
+        dtype=torch.float32,
+        device=torch.device("cpu"),
+        generator=generator_sp1,
+    )
+    latents_sp4, _, _ = pipeline_sp4.prepare_audio_latents(
+        batch_size=1,
+        num_channels_latents=2,
+        num_mel_bins=8,
+        audio_latent_length=3,
+        dtype=torch.float32,
+        device=torch.device("cpu"),
+        generator=generator_sp4,
+    )
+
+    torch.testing.assert_close(latents_sp4[:, :3], latents_sp1, rtol=0, atol=0)
+    torch.testing.assert_close(latents_sp4[:, 3:], torch.zeros_like(latents_sp4[:, 3:]))
+    torch.testing.assert_close(
+        torch.randn(8, generator=generator_sp4),
+        torch.randn(8, generator=generator_sp1),
+        rtol=0,
+        atol=0,
+    )
 
 
 def test_prepare_audio_latents_pads_packed_sequence_dim_for_provided_latents():
@@ -137,7 +174,9 @@ def test_prepare_audio_latents_accepts_already_padded_4d_latents_for_sp():
     assert original_num_frames == 10
     assert padded_num_frames == 12
     assert padded.shape == (1, 12, 8)
-    torch.testing.assert_close(padded, latent_ops.pack_audio_latents(latents))
+    packed = latent_ops.pack_audio_latents(latents)
+    torch.testing.assert_close(padded[:, :10], packed[:, :10])
+    torch.testing.assert_close(padded[:, 10:], torch.zeros_like(padded[:, 10:]))
 
 
 def test_resolve_audio_latent_length_preserves_legacy_4d_shape_inference():

tests/diffusion/models/ltx2/test_ltx2_parallel.py

@@ -12,6 +12,19 @@ import torch
 pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
 
 
+def test_velocity_from_x0_uses_official_host_scalar_sigma(mocker):
+    from vllm_omni.diffusion.models.ltx2.ltx2_guidance import velocity_from_x0
+
+    sigma = mocker.MagicMock()
+    sigma.to.return_value.item.return_value = 0.5
+
+    actual = velocity_from_x0(torch.tensor([1.0]), torch.tensor([0.0]), sigma)
+
+    sigma.to.assert_called_once_with(torch.float32)
+    sigma.to.return_value.item.assert_called_once_with()
+    torch.testing.assert_close(actual, torch.tensor([2.0]))
+
+
 class TestCFGParallelHelpers:
     """Test LTX-2.3 CFG helper math without loading model weights."""
 
@@ -199,6 +212,7 @@ class TestCFGParallelHelpers:
             ),
             attention_kwargs=None,
             audio_scheduler=SimpleNamespace(sigmas=torch.stack([audio_sigma])),
+            original_audio_num_frames=state.audio.shape[1],
         )
 
         actual_video, actual_audio = executor.predict_parallel_guidance(

tests/diffusion/models/ltx2/test_ltx2_phase_adapter.py

@@ -0,0 +1,483 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+"""Unit tests for the fixed LTX refinement-phase adapter."""
+
+from types import SimpleNamespace
+
+import pytest
+import torch
+from safetensors.torch import save_file
+
+from vllm_omni.diffusion.models.ltx2 import ltx2_phase_adapter
+from vllm_omni.diffusion.models.ltx2.ltx2_adapter_parser import (
+    AdapterTarget,
+    parse_ltx_adapter,
+)
+from vllm_omni.diffusion.models.ltx2.ltx2_components import LTX23_TWO_STAGE_COMPONENT_PROFILE
+from vllm_omni.diffusion.models.ltx2.ltx2_phase_adapter import LTXPhaseAdapterRuntime
+from vllm_omni.diffusion.models.ltx2.ltx2_recipes import (
+    LTX2_TWO_STAGE_RECIPE,
+    LTX_DISTILLED_ADAPTER_SLOT,
+)
+
+pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
+
+
+def _target(
+    lora_a,
+    lora_b,
+    *,
+    source_module="proj",
+    module="proj",
+    target_slice=None,
+):
+    return AdapterTarget(
+        source_module=source_module,
+        module=module,
+        slice=target_slice,
+        a_key="a",
+        b_key="b",
+        a_shape=tuple(lora_a.shape),
+        b_shape=tuple(lora_b.shape),
+    )
+
+
+def _wrap(
+    layer,
+    lora_a,
+    lora_b,
+    *,
+    source_module="proj",
+    module="proj",
+    target_slice=None,
+    layer_fused=False,
+):
+    target = _target(
+        lora_a,
+        lora_b,
+        source_module=source_module,
+        module=module,
+        target_slice=target_slice,
+    )
+    wrapper = ltx2_phase_adapter._PhaseAdapterLinear(
+        layer,
+        [target],
+        adapter_dtype=lora_a.dtype,
+        layer_fused=layer_fused,
+    )
+    wrapper.load_target(target, lora_a, lora_b)
+    wrapper.set_enabled(True)
+    return wrapper
+
+
+class _LoRAAttention(torch.nn.Module):
+    def __init__(self) -> None:
+        super().__init__()
+        self.to_qkv = torch.nn.Identity()
+
+
+class _LoRATransformer(torch.nn.Module):
+    stacked_params_mapping = ((".attn1.to_qkv", ".attn1.to_q", "q"),)
+
+    def __init__(self) -> None:
+        super().__init__()
+        self.proj_in = torch.nn.Linear(4, 6, bias=False)
+        block = torch.nn.Module()
+        block.attn1 = _LoRAAttention()
+        self.transformer_blocks = torch.nn.ModuleList([block])
+
+
+def test_ltx_adapter_parser_maps_official_and_packed_module_names(tmp_path):
+    adapter_path = tmp_path / "distilled.safetensors"
+    save_file(
+        {
+            "diffusion_model.text_embedding_projection.aggregate_embed.lora_A.weight": torch.randn(2, 4),
+            "diffusion_model.patchify_proj.lora_A.weight": torch.randn(2, 4),
+            "diffusion_model.patchify_proj.lora_B.weight": torch.randn(6, 2),
+            "diffusion_model.transformer_blocks.0.attn1.to_q.lora_A.weight": torch.randn(2, 4),
+            "diffusion_model.transformer_blocks.0.attn1.to_q.lora_B.weight": torch.randn(4, 2),
+        },
+        adapter_path,
+    )
+
+    manifest = parse_ltx_adapter(_LoRATransformer(), str(adapter_path))
+    assert {(target.source_module, target.module, target.slice) for target in manifest.targets} == {
+        ("proj_in", "proj_in", None),
+        ("transformer_blocks.0.attn1.to_q", "transformer_blocks.0.attn1.to_qkv", "q"),
+    }
+
+
+def test_ltx_adapter_parser_rejects_unpaired_b_tensor(tmp_path):
+    adapter_path = tmp_path / "distilled.safetensors"
+    save_file(
+        {"diffusion_model.patchify_proj.lora_B.weight": torch.randn(6, 2)},
+        adapter_path,
+    )
+
+    with pytest.raises(ValueError, match="Missing paired LoRA A tensors"):
+        parse_ltx_adapter(_LoRATransformer(), str(adapter_path))
+
+
+def _pipeline(*, dtype, quantization_config):
+    return SimpleNamespace(
+        pipeline_recipe=LTX2_TWO_STAGE_RECIPE,
+        component_profile=LTX23_TWO_STAGE_COMPONENT_PROFILE,
+        transformer=object(),
+        od_config=SimpleNamespace(
+            model="unused",
+            lora_path=None,
+            dtype=dtype,
+            quantization_config=quantization_config,
+        ),
+    )
+
+
+@pytest.mark.parametrize(
+    ("dtype", "quantization_config", "layer_fused"),
+    [
+        (torch.float32, object(), False),
+        (torch.bfloat16, None, True),
+    ],
+)
+def test_ltx_phase_adapter_selects_execution_from_quantization(
+    monkeypatch,
+    dtype,
+    quantization_config,
+    layer_fused,
+):
+    pipeline = _pipeline(dtype=dtype, quantization_config=quantization_config)
+    manifest = object()
+    captured = {}
+
+    def resolve_artifact(*_args, **kwargs):
+        assert not kwargs
+        return "adapter"
+
+    def parse(transformer, path):
+        assert transformer is pipeline.transformer
+        assert path == "adapter"
+        return manifest
+
+    class Runtime:
+        def __init__(self, transformer, parsed_manifest, **kwargs):
+            captured.update(transformer=transformer, manifest=parsed_manifest, **kwargs)
+
+    monkeypatch.setattr(ltx2_phase_adapter, "resolve_ltx_artifact", resolve_artifact)
+    monkeypatch.setattr(ltx2_phase_adapter, "parse_ltx_adapter", parse)
+    monkeypatch.setattr(ltx2_phase_adapter, "LTXPhaseAdapterRuntime", Runtime)
+
+    runtime = ltx2_phase_adapter.build_ltx_phase_adapter(pipeline)
+
+    assert isinstance(runtime, Runtime)
+    assert captured == {
+        "transformer": pipeline.transformer,
+        "manifest": manifest,
+        "dtype": dtype,
+        "layer_fused": layer_fused,
+    }
+
+
+def test_ltx_phase_adapter_rejects_non_bfloat16_layer_fused(monkeypatch):
+    pipeline = _pipeline(dtype=torch.float16, quantization_config=None)
+    monkeypatch.setattr(ltx2_phase_adapter, "resolve_ltx_artifact", lambda *_args, **_kwargs: "adapter")
+
+    with pytest.raises(ValueError, match="bfloat16"):
+        ltx2_phase_adapter.build_ltx_phase_adapter(pipeline)
+
+
+def test_ltx_phase_adapter_keeps_one_transformer_and_switches_a_fixed_slot(tmp_path):
+    class TinyTransformer(torch.nn.Module):
+        stacked_params_mapping = ()
+
+        def __init__(self) -> None:
+            super().__init__()
+            self.proj = torch.nn.Linear(2, 2, bias=False)
+
+    adapter_path = tmp_path / "distilled.safetensors"
+    save_file(
+        {
+            "diffusion_model.proj.lora_A.weight": torch.tensor([[1.0, 2.0]]),
+            "diffusion_model.proj.lora_B.weight": torch.tensor([[3.0], [4.0]]),
+        },
+        adapter_path,
+    )
+    transformer = TinyTransformer()
+    runtime = LTXPhaseAdapterRuntime(
+        transformer,
+        parse_ltx_adapter(transformer, str(adapter_path)),
+        dtype=torch.float32,
+    )
+
+    assert runtime.base_parameter_name("proj.weight") == "proj.base_layer.weight"
+    assert {name for name, _ in transformer.named_parameters()} == {"proj.base_layer.weight"}
+    with torch.no_grad():
+        transformer.proj.base_layer.weight.copy_(torch.eye(2))
+    runtime.finalize()
+
+    x = torch.tensor([[1.0, 1.0]])
+    runtime.activate(None)
+    torch.testing.assert_close(transformer.proj(x), torch.tensor([[1.0, 1.0]]))
+    runtime.activate(LTX_DISTILLED_ADAPTER_SLOT)
+    torch.testing.assert_close(transformer.proj(x), torch.tensor([[10.0, 13.0]]))
+
+
+def test_ltx_layer_fused_adapter_matches_official_bf16_weight_fusion():
+    layer = torch.nn.Linear(4, 3, bias=True, dtype=torch.bfloat16)
+    base_weight = torch.tensor(
+        [
+            [0.5, -0.25, 0.125, 0.75],
+            [-0.375, 0.625, 0.25, -0.5],
+            [0.875, -0.125, -0.75, 0.375],
+        ],
+        dtype=torch.bfloat16,
+    )
+    lora_a = torch.tensor(
+        [
+            [0.1015625, -0.203125, 0.3046875, -0.40625],
+            [0.5078125, -0.609375, 0.7109375, -0.8125],
+        ],
+        dtype=torch.bfloat16,
+    )
+    lora_b = torch.tensor(
+        [[0.9140625, -0.1171875], [-0.21875, 0.3203125], [0.421875, -0.5234375]],
+        dtype=torch.bfloat16,
+    )
+    with torch.no_grad():
+        layer.weight.copy_(base_weight)
+        layer.bias.copy_(torch.tensor([0.125, -0.25, 0.5], dtype=torch.bfloat16))
+    wrapper = _wrap(layer, lora_a, lora_b, layer_fused=True)
+
+    expected_weight = torch.matmul(lora_b, lora_a)
+    expected_weight.add_(base_weight)
+    x = torch.tensor([[0.6015625, -0.703125, 0.8046875, -0.90625]], dtype=torch.bfloat16)
+    expected = torch.nn.functional.linear(x, expected_weight, layer.bias)
+
+    assert torch.equal(wrapper(x), expected)
+    assert torch.equal(layer.weight, base_weight)
+
+
+def test_ltx_layer_fused_row_parallel_uses_one_collective(monkeypatch):
+    from vllm.model_executor.layers.linear import UnquantizedLinearMethod
+
+    class FakeRow(torch.nn.Module):
+        input_size = 4
+        output_size = 2
+        input_size_per_partition = 2
+        input_is_parallel = True
+        tp_rank = 0
+        tp_size = 2
+        reduce_results = True
+        skip_bias_add = False
+        return_bias = False
+
+        def __init__(self):
+            super().__init__()
+            self.weight = torch.nn.Parameter(torch.eye(2, dtype=torch.bfloat16))
+            self.bias = torch.nn.Parameter(torch.tensor([0.25, -0.5], dtype=torch.bfloat16))
+            self.quant_method = UnquantizedLinearMethod()
+
+    monkeypatch.setattr(ltx2_phase_adapter, "RowParallelLinear", FakeRow)
+    reductions = []
+
+    def all_reduce(value):
+        reductions.append(value.clone())
+        return value + 1
+
+    monkeypatch.setattr(ltx2_phase_adapter, "tensor_model_parallel_all_reduce", all_reduce)
+    layer = FakeRow()
+    lora_a = torch.tensor([[0.5, -0.25, 0.75, -0.125]], dtype=torch.bfloat16)
+    lora_b = torch.tensor([[0.25], [-0.5]], dtype=torch.bfloat16)
+    wrapper = _wrap(layer, lora_a, lora_b, layer_fused=True)
+
+    expected_weight = torch.matmul(lora_b, lora_a[:, :2])
+    expected_weight.add_(layer.weight)
+    x = torch.tensor([[1.0, 2.0]], dtype=torch.bfloat16)
+    expected_local = torch.nn.functional.linear(x, expected_weight, layer.bias)
+
+    actual = wrapper(x)
+    assert len(reductions) == 1
+    assert torch.equal(reductions[0], expected_local)
+    assert torch.equal(actual, expected_local + 1)
+
+
+def test_ltx_layer_fused_column_parallel_uses_local_weight_shard(monkeypatch):
+    from vllm.model_executor.layers.linear import UnquantizedLinearMethod
+
+    class FakeColumn(torch.nn.Module):
+        input_size = 3
+        output_size = 4
+        output_size_per_partition = 2
+        tp_rank = 1
+        tp_size = 2
+        gather_output = False
+        skip_bias_add = False
+        return_bias = False
+
+        def __init__(self):
+            super().__init__()
+            self.weight = torch.nn.Parameter(
+                torch.tensor([[0.5, -0.25, 0.125], [-0.375, 0.625, 0.25]], dtype=torch.bfloat16)
+            )
+            self.bias = torch.nn.Parameter(torch.tensor([0.25, -0.5], dtype=torch.bfloat16))
+            self.quant_method = UnquantizedLinearMethod()
+
+    monkeypatch.setattr(ltx2_phase_adapter, "ColumnParallelLinear", FakeColumn)
+    layer = FakeColumn()
+    base_weight = layer.weight.detach().clone()
+    lora_a = torch.tensor([[0.5, -0.25, 0.75]], dtype=torch.bfloat16)
+    lora_b = torch.tensor([[0.25], [-0.5], [0.75], [-1.0]], dtype=torch.bfloat16)
+    wrapper = _wrap(layer, lora_a, lora_b, layer_fused=True)
+
+    expected_weight = torch.matmul(lora_b[2:], lora_a)
+    expected_weight.add_(base_weight)
+    x = torch.tensor([[1.0, -0.5, 0.25]], dtype=torch.bfloat16)
+    expected = torch.nn.functional.linear(x, expected_weight, layer.bias)
+
+    assert torch.equal(wrapper(x), expected)
+    assert torch.equal(layer.weight, base_weight)
+
+
+def test_ltx_layer_fused_packed_qkv_updates_only_the_target_slice(monkeypatch):
+    from vllm.model_executor.layers.linear import UnquantizedLinearMethod
+
+    class FakeColumn(torch.nn.Module):
+        pass
+
+    class FakeQKV(FakeColumn):
+        input_size = 4
+        head_size = 2
+        v_head_size = 2
+        total_num_heads = 2
+        total_num_kv_heads = 2
+        num_heads = 1
+        num_kv_heads = 1
+        num_kv_head_replicas = 1
+        tp_rank = 1
+        tp_size = 2
+        gather_output = False
+        skip_bias_add = True
+        return_bias = True
+
+        def __init__(self):
+            super().__init__()
+            self.weight = torch.nn.Parameter(
+                torch.arange(24, dtype=torch.float32).reshape(6, 4).to(torch.bfloat16) / 16
+            )
+            self.bias = torch.nn.Parameter(torch.arange(6, dtype=torch.float32).to(torch.bfloat16) / 8)
+            self.quant_method = UnquantizedLinearMethod()
+
+    monkeypatch.setattr(ltx2_phase_adapter, "ColumnParallelLinear", FakeColumn)
+    monkeypatch.setattr(ltx2_phase_adapter, "QKVParallelLinear", FakeQKV)
+    layer = FakeQKV()
+    base_weight = layer.weight.detach().clone()
+    lora_a = torch.tensor([[0.5, -0.25, 0.75, -0.125]], dtype=torch.bfloat16)
+    lora_b = torch.tensor([[0.25], [-0.5], [0.75], [-1.0]], dtype=torch.bfloat16)
+    wrapper = _wrap(
+        layer,
+        lora_a,
+        lora_b,
+        source_module="to_k",
+        module="to_qkv",
+        target_slice="k",
+        layer_fused=True,
+    )
+
+    expected_weight = base_weight.clone()
+    expected_k = torch.matmul(lora_b[2:], lora_a)
+    expected_k.add_(base_weight[2:4])
+    expected_weight[2:4].copy_(expected_k)
+    x = torch.tensor([[1.0, -0.5, 0.25, -0.125]], dtype=torch.bfloat16)
+    expected_output = torch.nn.functional.linear(x, expected_weight)
+
+    actual_output, returned_bias = wrapper(x)
+    assert torch.equal(actual_output, expected_output)
+    assert returned_bias is layer.bias
+    assert torch.equal(layer.weight, base_weight)
+
+
+@pytest.mark.parametrize(
+    ("layer_factory", "target_slice", "expected_a", "expected_b", "expected_output"),
+    [
+        (
+            lambda: type(
+                "FakeColumn",
+                (torch.nn.Module,),
+                {
+                    "input_size": 4,
+                    "output_size": 4,
+                    "output_size_per_partition": 2,
+                    "tp_rank": 1,
+                    "gather_output": False,
+                    "forward": lambda self, x: x.new_zeros((*x.shape[:-1], 2)),
+                },
+            )(),
+            None,
+            torch.tensor([[1.0, 10.0, 100.0, 1000.0]]),
+            torch.tensor([[1.0], [2.0], [3.0], [4.0]]),
+            torch.tensor([[12963.0, 17284.0]]),
+        ),
+        (
+            lambda: type(
+                "FakeRow",
+                (torch.nn.Module,),
+                {
+                    "input_size": 4,
+                    "output_size": 2,
+                    "input_size_per_partition": 2,
+                    "tp_rank": 1,
+                    "reduce_results": False,
+                    "forward": lambda self, x: x.new_zeros((*x.shape[:-1], 2)),
+                },
+            )(),
+            None,
+            torch.tensor([[1.0, 10.0, 100.0, 1000.0]]),
+            torch.tensor([[2.0], [3.0]]),
+            torch.tensor([[8600.0, 12900.0]]),
+        ),
+        (
+            lambda: type(
+                "FakeQKV",
+                (torch.nn.Module,),
+                {
+                    "input_size": 4,
+                    "head_size": 2,
+                    "v_head_size": 2,
+                    "total_num_heads": 2,
+                    "total_num_kv_heads": 2,
+                    "num_heads": 1,
+                    "num_kv_heads": 1,
+                    "num_kv_head_replicas": 1,
+                    "tp_rank": 1,
+                    "forward": lambda self, x: x.new_zeros((*x.shape[:-1], 6)),
+                },
+            )(),
+            "k",
+            torch.tensor([[1.0, 10.0, 100.0, 1000.0]]),
+            torch.tensor([[1.0], [2.0], [3.0], [4.0]]),
+            torch.tensor([[0.0, 0.0, 12963.0, 17284.0, 0.0, 0.0]]),
+        ),
+    ],
+)
+def test_ltx_phase_adapter_uses_local_tp_lora_slices(
+    monkeypatch,
+    layer_factory,
+    target_slice,
+    expected_a,
+    expected_b,
+    expected_output,
+):
+    layer = layer_factory()
+    layer.register_buffer("device_anchor", torch.empty(0))
+    layer_type = type(layer)
+    if target_slice == "k":
+        monkeypatch.setattr(ltx2_phase_adapter, "QKVParallelLinear", layer_type)
+    elif "Column" in layer_type.__name__:
+        monkeypatch.setattr(ltx2_phase_adapter, "ColumnParallelLinear", layer_type)
+    else:
+        monkeypatch.setattr(ltx2_phase_adapter, "RowParallelLinear", layer_type)
+
+    wrapper = _wrap(layer, expected_a, expected_b, target_slice=target_slice)
+    torch.testing.assert_close(wrapper(torch.tensor([[1.0, 2.0, 3.0, 4.0]])), expected_output)
+    expected_local_a_width = getattr(layer, "input_size_per_partition", layer.input_size)
+    assert wrapper.pieces[0].lora_a.shape[-1] == expected_local_a_width

tests/diffusion/models/ltx2/test_ltx2_pipeline.py

@@ -13,13 +13,21 @@ import pytest
 import torch
 
 from vllm_omni.diffusion.data import DiffusionOutput
-from vllm_omni.diffusion.models.ltx2 import ltx2_components
+from vllm_omni.diffusion.models.ltx2 import (
+    ltx2_components,
+    ltx2_transformer,
+)
 from vllm_omni.diffusion.models.ltx2.ltx2_components import (
     LTX2_COMPONENT_PROFILE,
     LTX2_DISTILLED_COMPONENT_PROFILE,
+    LTX2_TWO_STAGE_COMPONENT_PROFILE,
     LTX23_COMPONENT_PROFILE,
+    LTX23_DISTILLED_COMPONENT_PROFILE,
+    LTX23_TWO_STAGE_COMPONENT_PROFILE,
     _install_connector_attention,
     detect_ltx_model_version,
+    resolve_ltx_artifact,
+    resolve_ltx_component_profile,
 )
 from vllm_omni.diffusion.models.ltx2.ltx2_conditioning import LTXI2VConditioningMixin
 from vllm_omni.diffusion.models.ltx2.ltx2_denoise import (
@@ -33,6 +41,7 @@ from vllm_omni.diffusion.models.ltx2.ltx2_guidance import (
     LTXGuidancePlan,
     LTXGuidanceSpec,
     LTXModalityGuidance,
+    _repeat_batch,
     build_perturbation_kwargs,
     combine_guided_x0,
 )
@@ -40,18 +49,29 @@ from vllm_omni.diffusion.models.ltx2.ltx2_latents import LTXAVState
 from vllm_omni.diffusion.models.ltx2.ltx2_recipes import (
     LTX2_DISTILLED_TWO_STAGE_RECIPE,
     LTX2_ONE_STAGE_RECIPE,
+    LTX2_TWO_STAGE_RECIPE,
+    LTX23_DISTILLED_TWO_STAGE_RECIPE,
     LTX23_ONE_STAGE_RECIPE,
+    LTX23_TWO_STAGE_RECIPE,
     LTX_DEFAULT_NEGATIVE_PROMPT,
     LTX_POSITIVE_ONLY_RECIPE,
+    resolve_ltx_pipeline_recipe,
+)
+from vllm_omni.diffusion.models.ltx2.ltx2_request import (
+    LTXRequestInputs,
+    validate_ltx_checkpoint,
+    validate_pipeline_request,
 )
-from vllm_omni.diffusion.models.ltx2.ltx2_request import LTXRequestInputs, validate_pipeline_request
 from vllm_omni.diffusion.models.ltx2.ltx2_runtime import LTXRuntime
 from vllm_omni.diffusion.models.ltx2.pipeline_ltx2 import (
     LTX2I2VDMD2Pipeline,
     LTX2Pipeline,
     LTX2T2VDMD2Pipeline,
 )
-from vllm_omni.diffusion.models.ltx2.pipeline_ltx2_two_stage import LTX2DistilledPipeline
+from vllm_omni.diffusion.models.ltx2.pipeline_ltx2_two_stage import (
+    LTX2DistilledPipeline,
+    LTX2TwoStagePipeline,
+)
 
 pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
 
@@ -104,10 +124,22 @@ def test_ltx_public_entries_share_runtime_and_keep_recipe_boundaries():
     )
 
     assert issubclass(LTX2Pipeline, LTXRuntime)
+    assert issubclass(LTX2TwoStagePipeline, LTXRuntime)
     assert issubclass(LTX2DistilledPipeline, LTXRuntime)
     assert LTX2Pipeline.component_profile is LTX2_COMPONENT_PROFILE
     assert LTX2Pipeline.pipeline_recipe is LTX2_ONE_STAGE_RECIPE
+    assert LTX2TwoStagePipeline.component_profile is LTX2_TWO_STAGE_COMPONENT_PROFILE
+    assert LTX2TwoStagePipeline.pipeline_recipe is LTX2_TWO_STAGE_RECIPE
     assert LTX2DistilledPipeline.component_profile is LTX2_DISTILLED_COMPONENT_PROFILE
+    for pipeline_cls, profile in (
+        (LTX2Pipeline, LTX2_COMPONENT_PROFILE),
+        (LTX2TwoStagePipeline, LTX2_TWO_STAGE_COMPONENT_PROFILE),
+        (LTX2DistilledPipeline, LTX2_DISTILLED_COMPONENT_PROFILE),
+    ):
+        assert pipeline_cls._dit_modules == list(profile.dit_modules)
+        assert pipeline_cls._encoder_modules == list(profile.encoder_modules)
+        assert pipeline_cls._vae_modules == list(profile.vae_modules)
+        assert pipeline_cls._resident_modules == list(profile.resident_modules)
     assert LTX2_COMPONENT_PROFILE.video_vae_cls is DistributedAutoencoderKLLTX2Video
     assert LTX23_COMPONENT_PROFILE.video_vae_cls is DistributedAutoencoderKLLTX2Video
 
@@ -123,6 +155,72 @@ def test_ltx_checkpoint_version_detection_uses_metadata(tmp_path):
     assert detect_ltx_model_version(str(tmp_path)) == "2"
 
 
+def test_ltx_artifact_falls_back_to_unpinned_hub_download(tmp_path, monkeypatch):
+    filename = "ltx-sidecar.safetensors"
+    calls = []
+
+    def fake_download(**kwargs):
+        calls.append(kwargs)
+        return "/cache/ltx-sidecar.safetensors"
+
+    monkeypatch.setattr(ltx2_components, "hf_hub_download", fake_download)
+
+    assert (
+        resolve_ltx_artifact(str(tmp_path / "model"), "Lightricks/test", filename) == "/cache/ltx-sidecar.safetensors"
+    )
+    assert calls == [{"repo_id": "Lightricks/test", "filename": filename}]
+
+
+def test_ltx_artifact_prefers_model_root(tmp_path, monkeypatch):
+    filename = "ltx-sidecar.safetensors"
+    expected = tmp_path / filename
+    expected.write_bytes(b"sidecar")
+    monkeypatch.setattr(ltx2_components, "hf_hub_download", lambda **_kwargs: pytest.fail("unexpected Hub lookup"))
+
+    assert resolve_ltx_artifact(str(tmp_path), "Lightricks/test", filename) == str(expected)
+
+
+@pytest.mark.parametrize(
+    ("expected_kind", "scheduler_config"),
+    [
+        ("regular", {"use_dynamic_shifting": True, "shift_terminal": 0.1}),
+        ("distilled", {"use_dynamic_shifting": False, "shift_terminal": None}),
+    ],
+)
+def test_ltx_checkpoint_validation_accepts_matching_scheduler_metadata(expected_kind, scheduler_config):
+    validate_ltx_checkpoint(
+        scheduler_config,
+        expected_kind=expected_kind,
+        pipeline_name="TestLTXPipeline",
+    )
+
+
+@pytest.mark.parametrize(
+    ("expected_kind", "scheduler_config", "error"),
+    [
+        ("regular", {"use_dynamic_shifting": False, "shift_terminal": None}, "regular non-distilled"),
+        ("distilled", {"use_dynamic_shifting": True, "shift_terminal": 0.1}, "merged distilled"),
+    ],
+)
+def test_ltx_checkpoint_validation_rejects_mismatched_scheduler_metadata(expected_kind, scheduler_config, error):
+    with pytest.raises(ValueError, match=error):
+        validate_ltx_checkpoint(
+            scheduler_config,
+            expected_kind=expected_kind,
+            pipeline_name="TestLTXPipeline",
+        )
+
+
+def test_ltx_rejects_advanced_uaa_before_component_initialization():
+    od_config = SimpleNamespace(
+        model="unused",
+        parallel_config=SimpleNamespace(ulysses_mode="advanced_uaa"),
+    )
+
+    with pytest.raises(ValueError, match="does not support ulysses_mode='advanced_uaa'"):
+        LTX2Pipeline(od_config=od_config)
+
+
 def test_ltx23_checkpoint_selects_version_specific_one_stage_profile(tmp_path, monkeypatch):
     from vllm_omni.diffusion.models.ltx2 import ltx2_runtime
 
@@ -144,16 +242,104 @@ def test_ltx23_checkpoint_selects_version_specific_one_stage_profile(tmp_path, m
     assert pipe.reports_stage_durations
 
 
-def test_ltx_one_stage_entry_exposes_batch_image_and_distributed_decode_contracts():
+def test_ltx_multistage_rejects_cache_dit_before_component_initialization(tmp_path, monkeypatch):
+    from vllm_omni.diffusion.models.ltx2 import ltx2_runtime
+
+    (tmp_path / "model_index.json").write_text(json.dumps({"vocoder": ["ltx2", "LTX2Vocoder"]}))
+    initialized = False
+
+    def stub_components(*_args, **_kwargs):
+        nonlocal initialized
+        initialized = True
+
+    monkeypatch.setattr(ltx2_runtime, "initialize_pipeline_components", stub_components)
+
+    with pytest.raises(ValueError, match="only one-stage LTX recipes"):
+        LTX2TwoStagePipeline(
+            od_config=SimpleNamespace(
+                model=str(tmp_path),
+                cache_backend="cache_dit",
+            )
+        )
+
+    assert not initialized
+
+
+def test_ltx23_checkpoint_selects_version_specific_two_stage_profiles(tmp_path, monkeypatch):
+    from vllm_omni.diffusion.models.ltx2 import ltx2_runtime
+
+    (tmp_path / "model_index.json").write_text(json.dumps({"vocoder": ["ltx2", "LTX2VocoderWithBWE"]}))
+
+    def stub_components(pipe, od_config):
+        pipe.od_config = od_config
+        pipe.vae_spatial_compression_ratio = 32
+
+    monkeypatch.setattr(ltx2_runtime, "initialize_pipeline_components", stub_components)
+    monkeypatch.setattr(LTXRuntime, "setup_diffusion_pipeline_profiler", lambda *_args, **_kwargs: None)
+    monkeypatch.setattr(ltx2_runtime, "build_ltx_phase_adapter", lambda *_args: SimpleNamespace())
+    pipe = LTX2TwoStagePipeline(
+        od_config=SimpleNamespace(
+            model=str(tmp_path),
+            enable_diffusion_pipeline_profiler=False,
+            lora_path=None,
+            model_config={},
+        )
+    )
+
+    assert pipe.model_version == "2.3"
+    assert pipe.component_profile is LTX23_TWO_STAGE_COMPONENT_PROFILE
+    assert pipe.pipeline_recipe is LTX23_TWO_STAGE_RECIPE
+
+
+def test_ltx23_checkpoint_selects_full_distilled_profile_and_recipe(tmp_path, monkeypatch):
+    from vllm_omni.diffusion.models.ltx2 import ltx2_runtime
+
+    (tmp_path / "model_index.json").write_text(json.dumps({"vocoder": ["ltx2", "LTX2VocoderWithBWE"]}))
+
+    def stub_components(pipe, od_config):
+        pipe.od_config = od_config
+        pipe.vae_spatial_compression_ratio = 32
+
+    monkeypatch.setattr(ltx2_runtime, "initialize_pipeline_components", stub_components)
+    monkeypatch.setattr(LTXRuntime, "setup_diffusion_pipeline_profiler", lambda *_args, **_kwargs: None)
+
+    pipe = LTX2DistilledPipeline(
+        od_config=SimpleNamespace(
+            model=str(tmp_path),
+            enable_diffusion_pipeline_profiler=False,
+        )
+    )
+
+    assert pipe.model_version == "2.3"
+    assert pipe.component_profile is LTX23_DISTILLED_COMPONENT_PROFILE
+    assert pipe.pipeline_recipe is LTX23_DISTILLED_TWO_STAGE_RECIPE
+    assert pipe._phase_adapter is None
+    assert pipe.preserve_sp_padded_audio_duration
+    assert pipe.reports_stage_durations
+
+
+def test_ltx_entries_expose_batch_image_and_distributed_decode_contracts():
     assert LTX2Pipeline.supports_request_batch
     assert LTX2Pipeline.support_image_input
     assert LTX2Pipeline.unified_text_image_entry
     assert LTX2Pipeline.distributed_video_decode
+    assert not LTX2TwoStagePipeline.supports_request_batch
+    assert LTX2TwoStagePipeline.support_image_input
+    assert LTX2TwoStagePipeline.unified_text_image_entry
     assert not LTX2DistilledPipeline.supports_request_batch
     assert LTX2DistilledPipeline.support_image_input
     assert LTX2DistilledPipeline.unified_text_image_entry
 
 
+def test_ltx_two_stage_resolves_request_embedded_images():
+    pipe = object.__new__(LTX2TwoStagePipeline)
+    request_inputs = SimpleNamespace(latents=None)
+    image = torch.zeros(3, 8, 8)
+    req = SimpleNamespace(prompts=[{"prompt": "image conditioned", "multi_modal_data": {"image": image}}])
+
+    assert pipe._resolve_request_image(req, None, request_inputs) is image
+
+
 def test_ltx_dmd2_entries_retain_their_task_boundaries():
     assert not LTX2T2VDMD2Pipeline.support_image_input
     assert LTX2I2VDMD2Pipeline.support_image_input
@@ -330,6 +516,15 @@ def test_ltx_guidance_uses_official_close_to_disabled_semantics():
     assert LTXGuidancePlan.build(LTXGuidanceSpec(video=guidance)).names == ("cond",)
 
 
+def test_ltx_positive_only_guidance_preserves_token_major_layout():
+    tensor = torch.arange(24).view(1, 3, 8).transpose(1, 2).contiguous().transpose(1, 2)
+
+    repeated = _repeat_batch(tensor, 1)
+
+    assert repeated is tensor
+    assert repeated.stride() == tensor.stride()
+
+
 def test_ltx_guidance_rescale_is_invariant_to_request_batching():
     cond = torch.tensor(
         [
@@ -380,6 +575,32 @@ def test_ltx_guidance_rescale_handles_zero_variance_prediction():
     torch.testing.assert_close(actual, torch.zeros_like(cond))
 
 
+def test_ltx_audio_guidance_rescale_ignores_sp_padding_tokens():
+    logical_cond = torch.tensor([[[1.0, 2.0], [3.0, 5.0]]])
+    logical_uncond = torch.tensor([[[0.5, -1.0], [2.0, 1.0]]])
+    guidance = LTXModalityGuidance(cfg_scale=3.0, rescale_scale=1.0)
+    expected = combine_guided_x0(
+        cond=logical_cond,
+        uncond_text=logical_uncond,
+        uncond_perturbed=0.0,
+        uncond_modality=0.0,
+        guidance=guidance,
+    )
+    padded_cond = torch.cat([logical_cond, torch.tensor([[[1000.0, -1000.0]]])], dim=1)
+    padded_uncond = torch.cat([logical_uncond, torch.tensor([[[-500.0, 500.0]]])], dim=1)
+
+    actual = combine_guided_x0(
+        cond=padded_cond,
+        uncond_text=padded_uncond,
+        uncond_perturbed=0.0,
+        uncond_modality=0.0,
+        guidance=guidance,
+        rescale_token_count=2,
+    )
+
+    torch.testing.assert_close(actual[:, :2], expected)
+
+
 def test_ltx_guidance_builds_per_sample_stg_and_modality_masks():
     plan = LTXGuidancePlan.build(LTX23_ONE_STAGE_RECIPE.request_guidance)
     perturbations = build_perturbation_kwargs(plan, batch_size=2, reference=torch.ones(8, 1, 1))
@@ -547,11 +768,19 @@ def test_ltx_connector_attention_dispatches_through_omni_kernel(has_learned_regi
 
 def test_ltx2_distilled_pipeline_shares_recipe_runtime():
     assert issubclass(LTX2DistilledPipeline, LTXI2VConditioningMixin)
-    assert issubclass(LTX2DistilledPipeline, LTX2Pipeline)
+    assert not issubclass(LTX2DistilledPipeline, LTX2Pipeline)
     assert LTX2DistilledPipeline._run_recipe is LTXRuntime._run_recipe
     assert "_forward_request" not in LTX2DistilledPipeline.__dict__
 
 
+def test_ltx_two_stage_entry_is_a_thin_pipeline_variant():
+    assert "_run_recipe" not in LTX2TwoStagePipeline.__dict__
+    assert "_forward_request" not in LTX2TwoStagePipeline.__dict__
+    assert "load_weights" not in LTX2TwoStagePipeline.__dict__
+    assert issubclass(LTX2TwoStagePipeline, LTXI2VConditioningMixin)
+    assert not issubclass(LTX2TwoStagePipeline, LTX2Pipeline)
+
+
 def test_ltx_variants_share_denoise_loop_and_i2v_conditioning():
     assert "_denoise_loop" not in LTX2Pipeline.__dict__
     assert issubclass(LTX2Pipeline, LTXI2VConditioningMixin)
@@ -594,7 +823,8 @@ def test_denoise_executor_owns_progress_and_interrupt():
     torch.testing.assert_close(state.audio, torch.tensor(11.0))
 
 
-def test_ltx2_distilled_two_stage_executes_declarative_phase_plan():
+@pytest.mark.parametrize("pipeline_cls", [LTX2TwoStagePipeline, LTX2DistilledPipeline])
+def test_ltx_two_stage_executes_declarative_i2v_phase_plan(pipeline_cls):
     request_inputs = LTXRequestInputs(
         prompt="prompt",
         negative_prompt="",
@@ -671,12 +901,15 @@ def test_ltx2_distilled_two_stage_executes_declarative_phase_plan():
             return latents.repeat_interleave(2, dim=-2).repeat_interleave(2, dim=-1)
 
     prompt_context_sentinel = prompt_context
-    pipeline = object.__new__(LTX2DistilledPipeline)
+    pipeline = object.__new__(pipeline_cls)
     torch.nn.Module.__init__(pipeline)
     pipeline.device = torch.device("cpu")
     pipeline.vae_spatial_compression_ratio = 32
     pipeline.vae_temporal_compression_ratio = 8
     pipeline.latent_upsampler = FakeUpsampler()
+    activated_slots = []
+    if pipeline_cls is LTX2TwoStagePipeline:
+        pipeline._phase_adapter = SimpleNamespace(activate=activated_slots.append)
     object.__setattr__(pipeline, "_resolve_request_inputs", resolve_request_inputs)
     object.__setattr__(pipeline, "run_phase", run_phase)
     object.__setattr__(pipeline, "decode_phase", decode_phase)
@@ -686,14 +919,18 @@ def test_ltx2_distilled_two_stage_executes_declarative_phase_plan():
 
     assert len(phase_calls) == 2
     assert phase_calls[1][2] is prompt_context_sentinel
+    if pipeline_cls is LTX2TwoStagePipeline:
+        assert activated_slots == [None, "ltx_distilled"]
     torch.testing.assert_close(output.output[0], torch.full((1, 128, 1, 2, 2), 3.0))
-    torch.testing.assert_close(output.output[1], torch.full((1, 8, 1, 2), 4.0))
+    expected_audio = 2.0 if pipeline_cls is LTX2TwoStagePipeline else 4.0
+    torch.testing.assert_close(output.output[1], torch.full((1, 8, 1, 2), expected_audio))
 
 
-def test_ltx2_distilled_stage2_reapplies_final_resolution_i2v_conditioning():
+@pytest.mark.parametrize("pipeline_cls", [LTX2TwoStagePipeline, LTX2DistilledPipeline])
+def test_ltx_two_stage_stage2_reapplies_final_resolution_i2v_conditioning(pipeline_cls):
     from vllm_omni.diffusion.models.ltx2 import ltx2_latents
 
-    pipeline = object.__new__(LTX2DistilledPipeline)
+    pipeline = object.__new__(pipeline_cls)
     torch.nn.Module.__init__(pipeline)
     pipeline.vae_spatial_compression_ratio = 32
     pipeline.vae_temporal_compression_ratio = 8
@@ -750,6 +987,18 @@ def test_ltx2_distilled_two_stage_recipe_is_fixed_positive_only():
     assert (LTX2_DISTILLED_TWO_STAGE_RECIPE.height, LTX2_DISTILLED_TWO_STAGE_RECIPE.width) == (1024, 1536)
 
 
+def test_ltx23_full_distilled_route_uses_merged_weights_without_lora():
+    assert resolve_ltx_component_profile("distilled_two_stage", "2.3") is LTX23_DISTILLED_COMPONENT_PROFILE
+    assert resolve_ltx_pipeline_recipe("distilled_two_stage", "2.3") is LTX23_DISTILLED_TWO_STAGE_RECIPE
+    assert LTX23_DISTILLED_TWO_STAGE_RECIPE is LTX2_DISTILLED_TWO_STAGE_RECIPE
+    assert all(phase.adapter_slot is None for phase in LTX23_DISTILLED_TWO_STAGE_RECIPE.phases)
+    assert LTX23_DISTILLED_COMPONENT_PROFILE.distilled_lora_filename is None
+    assert LTX23_DISTILLED_COMPONENT_PROFILE.vocoder_cls is LTX23_COMPONENT_PROFILE.vocoder_cls
+    assert LTX23_DISTILLED_COMPONENT_PROFILE.latent_upsampler_filename == (
+        "ltx-2.3-spatial-upscaler-x2-1.1.safetensors"
+    )
+
+
 @pytest.mark.parametrize(
     ("request_inputs", "error"),
     [
@@ -958,6 +1207,98 @@ def test_ltx_custom_sigmas_bypass_scheduler_shifting():
     torch.testing.assert_close(timesteps, expected[:-1] * scheduler.config.num_train_timesteps)
 
 
+@pytest.mark.parametrize(
+    ("recipe", "steps", "stg_block"),
+    [
+        (LTX2_TWO_STAGE_RECIPE, 40, 29),
+        (LTX23_TWO_STAGE_RECIPE, 30, 28),
+    ],
+)
+def test_ltx_official_two_stage_recipes_only_vary_by_model_defaults(recipe, steps, stg_block):
+    stage1, stage2 = recipe.phases
+    assert (recipe.width, recipe.height) == (1536, 1024)
+    assert recipe.num_inference_steps == steps
+    assert stage1.spatial_downscale == 2
+    assert stage1.adapter_slot is None
+    assert stage1.guidance.video.stg_blocks == (stg_block,)
+    assert stage1.guidance.audio.stg_blocks == (stg_block,)
+    assert stage2.input_transform == "spatial_upsample"
+    assert stage2.adapter_slot == "ltx_distilled"
+    assert stage2.guidance == LTXGuidanceSpec.positive_only()
+    assert stage2.num_inference_steps == 3
+    assert stage2.sigmas == (0.909375, 0.725, 0.421875, 0.0)
+    # Official Stage 2 refines video only; its audio result is discarded.
+    assert (recipe.video_output_phase, recipe.audio_output_phase) == (1, 0)
+
+
+def test_ltx_two_stage_entries_select_the_official_adapter_slots():
+    phase_switches = []
+    ordinary_pipeline = object.__new__(LTX2TwoStagePipeline)
+    ordinary_pipeline._phase_adapter = SimpleNamespace(activate=phase_switches.append)
+    for phase in LTX2_TWO_STAGE_RECIPE.phases:
+        ordinary_pipeline._enter_phase(phase)
+    assert phase_switches == [None, "ltx_distilled"]
+
+    distilled_pipeline = object.__new__(LTX2DistilledPipeline)
+    for phase in LTX2_DISTILLED_TWO_STAGE_RECIPE.phases:
+        distilled_pipeline._enter_phase(phase)
+
+
+def test_ltx23_gate_projection_declares_its_global_column_parallel_layout(monkeypatch):
+    class FakeColumn(torch.nn.Module):
+        def __init__(
+            self,
+            input_size,
+            output_size,
+            *,
+            bias,
+            gather_output,
+            return_bias,
+            quant_config,
+            prefix,
+        ):
+            super().__init__()
+            self.input_size = input_size
+            self.output_size = output_size
+            self.bias_enabled = bias
+            self.gather_output = gather_output
+            self.return_bias = return_bias
+            self.quant_config = quant_config
+            self.prefix = prefix
+
+    class FakeRow(torch.nn.Module):
+        def __init__(self, *args, **kwargs):
+            super().__init__()
+
+    class FakeAttention(torch.nn.Module):
+        def __init__(self, **kwargs):
+            super().__init__()
+
+    monkeypatch.setattr(ltx2_transformer, "ColumnParallelLinear", FakeColumn)
+    monkeypatch.setattr(ltx2_transformer, "RowParallelLinear", FakeRow)
+    monkeypatch.setattr(ltx2_transformer, "_LTX2ParallelAttention", FakeAttention)
+    monkeypatch.setattr(ltx2_transformer, "get_tensor_model_parallel_world_size", lambda: 2)
+
+    attention = ltx2_transformer.LTX2Attention(
+        query_dim=16,
+        heads=4,
+        dim_head=4,
+        qk_norm="rms_norm",
+        apply_gated_attention=True,
+        pack_qkv=False,
+        prefix="transformer_blocks.0.attn1",
+    )
+
+    gate = attention.to_gate_logits
+    assert isinstance(gate, FakeColumn)
+    assert gate.input_size == 16
+    assert gate.output_size == 4
+    assert gate.gather_output is False
+    assert gate.return_bias is False
+    assert gate.quant_config is None
+    assert gate.prefix == "transformer_blocks.0.attn1.to_gate_logits"
+
+
 class TestLTXRequestParsing:
     def test_request_resolves_official_and_explicit_negative_prompts_per_sample(self):
         from vllm_omni.diffusion.request import OmniDiffusionRequest
@@ -1432,6 +1773,7 @@ class TestPipelineComponents:
 
     def test_distilled_profile_keeps_upsampler_in_managed_resident_components(self):
         assert LTX2_DISTILLED_COMPONENT_PROFILE.resident_modules == ("vocoder", "latent_upsampler")
+        assert LTX23_DISTILLED_COMPONENT_PROFILE.resident_modules == ("vocoder", "latent_upsampler")
 
 
 class TestLTX23DecodeConditioning:
@@ -1477,6 +1819,11 @@ class TestRegistryIntegration:
         from vllm_omni.diffusion.registry import _DIFFUSION_MODELS
 
         assert _DIFFUSION_MODELS["LTX2Pipeline"] == ("ltx2", "pipeline_ltx2", "LTX2Pipeline")
+        assert _DIFFUSION_MODELS["LTX2TwoStagePipeline"] == (
+            "ltx2",
+            "pipeline_ltx2_two_stage",
+            "LTX2TwoStagePipeline",
+        )
         assert _DIFFUSION_MODELS["LTX2DistilledPipeline"] == (
             "ltx2",
             "pipeline_ltx2_two_stage",
@@ -1488,6 +1835,9 @@ class TestRegistryIntegration:
             "LTX23ImageToVideoPipeline",
             "LTX2TwoStagesPipeline",
             "LTX2ImageToVideoTwoStagesPipeline",
+            "LTX2ImageToVideoTwoStagePipeline",
+            "LTX23TwoStagePipeline",
+            "LTX23ImageToVideoTwoStagePipeline",
         }
         assert removed_entries.isdisjoint(_DIFFUSION_MODELS)
 
@@ -1497,6 +1847,7 @@ class TestRegistryIntegration:
 
         expected = [
             "LTX2Pipeline",
+            "LTX2TwoStagePipeline",
             "LTX2DistilledPipeline",
             "LTX2T2VDMD2Pipeline",
             "LTX2I2VDMD2Pipeline",
@@ -1509,6 +1860,7 @@ class TestRegistryIntegration:
         "model_class_name",
         [
             "LTX2Pipeline",
+            "LTX2TwoStagePipeline",
             "LTX2DistilledPipeline",
             "LTX2T2VDMD2Pipeline",
             "LTX2I2VDMD2Pipeline",

tests/diffusion/models/ltx2/test_ltx2_transformer.py

@@ -1,13 +1,20 @@
 # SPDX-License-Identifier: Apache-2.0
 # SPDX-FileCopyrightText: Copyright contributors to the vLLM project
 
+from types import SimpleNamespace
+
 import pytest
+import torch
 from torch import nn
 
+from vllm_omni.diffusion.attention.backends.abstract import AttentionMetadata
 from vllm_omni.diffusion.cache.cachedit import CacheDiTAdapterConfig
-from vllm_omni.diffusion.models.ltx2.ltx2_transformer import LTX2VideoTransformer3DModel, _make_rms_norm
-
-pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
+from vllm_omni.diffusion.models.ltx2.ltx2_transformer import (
+    LTX2AudioVideoAttnProcessor,
+    LTX2VideoTransformer3DModel,
+    _LTX2ParallelAttention,
+    _make_rms_norm,
+)
 
 pytestmark = [pytest.mark.core_model, pytest.mark.diffusion, pytest.mark.cpu]
 
@@ -66,3 +73,83 @@ def test_ltx_sp_plan_shards_video_and_audio_timesteps_together(rope_type):
     assert video_timestep.expected_dims == audio_timestep.expected_dims == 2
     assert not video_timestep.split_output
     assert not audio_timestep.split_output
+
+
+def test_ltx_sp_keeps_cross_attention_key_padding_mask(monkeypatch):
+    monkeypatch.setattr(LTX2AudioVideoAttnProcessor, "_is_sp_enabled", staticmethod(lambda: True))
+    processor = LTX2AudioVideoAttnProcessor()
+    hidden_states = torch.zeros(1, 3, 4)
+    encoder_hidden_states = torch.zeros(1, 4, 4)
+    key_padding_mask = torch.tensor([[True, True, True, False]])
+
+    actual = processor._prepare_attention_mask(
+        SimpleNamespace(),
+        hidden_states,
+        encoder_hidden_states,
+        key_padding_mask,
+        batch_size=1,
+        sequence_length=4,
+    )
+
+    torch.testing.assert_close(actual, key_padding_mask[:, None, None, :])
+
+
+def _fake_ltx_parallel_attention():
+    calls = []
+
+    class Backend:
+        @staticmethod
+        def get_name():
+            return "FLASH_ATTN"
+
+        @staticmethod
+        def supports_attention_mask():
+            return True
+
+    def run(name):
+        def forward(query, _key, _value, _metadata):
+            calls.append(name)
+            return torch.zeros_like(query)
+
+        return forward
+
+    layer = object.__new__(_LTX2ParallelAttention)
+    nn.Module.__init__(layer)
+    layer.attn_backend = Backend
+    layer.attention = SimpleNamespace(forward=run("native"))
+    layer.sdpa_fallback = SimpleNamespace(forward=run("sdpa"))
+    layer.backend_pref = "FLASH_ATTN"
+    return layer, calls
+
+
+@pytest.mark.parametrize(("query_length", "key_length"), [(4, 4), (3, 4)])
+def test_ltx_masked_cross_attention_uses_sdpa(query_length, key_length):
+    layer, calls = _fake_ltx_parallel_attention()
+    query = torch.zeros(1, query_length, 2, 4, dtype=torch.bfloat16)
+    key = value = torch.zeros(1, key_length, 2, 4, dtype=torch.bfloat16)
+    key_padding_mask = torch.tensor([[True] * (key_length - 1) + [False]])
+    metadata = AttentionMetadata(attn_mask=key_padding_mask[:, None, None, :])
+
+    layer._run_local_attention(query, key, value, metadata)
+
+    assert calls == ["sdpa"]
+
+
+def test_ltx_masked_self_attention_uses_sdpa():
+    layer, calls = _fake_ltx_parallel_attention()
+    query = key = value = torch.zeros(1, 4, 2, 4, dtype=torch.bfloat16)
+    key_padding_mask = torch.tensor([[True, True, True, False]])
+    metadata = AttentionMetadata(attn_mask=key_padding_mask[:, None, None, :])
+
+    layer._run_local_attention(query, key, value, metadata)
+
+    assert calls == ["sdpa"]
+
+
+def test_ltx_unmasked_cross_attention_keeps_native_backend():
+    layer, calls = _fake_ltx_parallel_attention()
+    query = key = value = torch.zeros(1, 4, 2, 4, dtype=torch.bfloat16)
+
+    layer._run_local_attention(query, key, value, None)
+
+    assert calls == ["native"]

tests/diffusion/models/minimax_h3/test_minimax_h3_rmsnorm.py

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+import torch
+
+from vllm_omni.diffusion.layers.norm import RMSNorm
+from vllm_omni.diffusion.models.minimax_h3.encoder import MiniMaxH3Qwen3VLRMSNorm
+
+
+def test_qwen3_vl_rmsnorm_uses_common_fused_rmsnorm_contract() -> None:
+    """Qwen keeps BF16 gamma while native fallback accumulates in FP32."""
+    eps = 1e-6
+    norm = MiniMaxH3Qwen3VLRMSNorm(hidden_size=4, eps=eps, dtype=torch.bfloat16)
+    norm.weight.data.copy_(torch.tensor([1.0, 0.5, 1.5, 2.0], dtype=torch.bfloat16))
+    x = torch.tensor(
+        [[1.0, -2.0, 3.0, -4.0], [-5.0, 6.0, -7.0, 8.0]],
+        dtype=torch.bfloat16,
+    )
+
+    x_fp32 = x.float()
+    expected = (x_fp32 * torch.rsqrt(x_fp32.square().mean(-1, keepdim=True) + eps) * norm.weight.float()).to(x.dtype)
+
+    assert isinstance(norm, RMSNorm)
+    assert norm.weight.dtype == torch.bfloat16
+    assert set(norm.state_dict()) == {"weight"}
+    torch.testing.assert_close(norm.forward_native(x), expected, atol=0, rtol=0)