diff --git a/.buildkite/cuda/test-nightly.yml b/.buildkite/cuda/test-nightly.yml
index ab9f0e060..49a0aca2f 100644
--- a/.buildkite/cuda/test-nightly.yml
+++ b/.buildkite/cuda/test-nightly.yml
@@ -41,6 +41,7 @@ steps:
   #       timeout_in_minutes: 180
   #       commands:
   #         - export SEED_TTS_WER_EVAL=1
+  #         - export SEED_TTS_SIM_EVAL=1
   #         - export SEED_TTS_EVAL_DEVICE=cuda:1
   #         - |
   #           set +e
@@ -54,6 +55,7 @@ steps:
         timeout_in_minutes: 180
         commands:
           - export SEED_TTS_WER_EVAL=1
+          - export SEED_TTS_SIM_EVAL=1
           - export SEED_TTS_EVAL_DEVICE=cuda:1
           - |
             set +e
diff --git a/.buildkite/npu/test-npu-nightly.yml b/.buildkite/npu/test-npu-nightly.yml
index f66631184..a602aba59 100644
--- a/.buildkite/npu/test-npu-nightly.yml
+++ b/.buildkite/npu/test-npu-nightly.yml
@@ -84,6 +84,7 @@ steps:
           HF_TOKEN: "${HF_TOKEN}"
         commands:
           - export SEED_TTS_WER_EVAL=1
+          - export SEED_TTS_SIM_EVAL=1
           - export SEED_TTS_EVAL_DEVICE=npu:1
           # Video-MME needs no repo override here: the NPU runners pre-stage the dataset under
           # the lmms-eval mirror, which is now VIDEOMME_DEFAULT_HF_REPO, so snapshot_download
diff --git a/docker/Dockerfile.npu.ci b/docker/Dockerfile.npu.ci
index 40cac6ee3..010763f35 100644
--- a/docker/Dockerfile.npu.ci
+++ b/docker/Dockerfile.npu.ci
@@ -44,6 +44,7 @@ RUN source /usr/local/Ascend/ascend-toolkit/set_env.sh && \
       "jiwer>=4.0.0" \
       "zhon>=2.1.1" \
       "zhconv>=1.4.3" \
+      "funasr>=1.3.0" \
       "datasets>=3.0.0" \
       --index-url http://cache-service.nginx-pypi-cache.svc.cluster.local/pypi/simple \
       --trusted-host cache-service.nginx-pypi-cache.svc.cluster.local \
diff --git a/docker/Dockerfile.npu.ci.a3 b/docker/Dockerfile.npu.ci.a3
index 4682643c1..29ad35d9a 100644
--- a/docker/Dockerfile.npu.ci.a3
+++ b/docker/Dockerfile.npu.ci.a3
@@ -44,6 +44,7 @@ RUN source /usr/local/Ascend/ascend-toolkit/set_env.sh && \
       "jiwer>=4.0.0" \
       "zhon>=2.1.1" \
       "zhconv>=1.4.3" \
+      "funasr>=1.3.0" \
       "datasets>=3.0.0" \
       --index-url http://cache-service.nginx-pypi-cache.svc.cluster.local/pypi/simple \
       --trusted-host cache-service.nginx-pypi-cache.svc.cluster.local \
diff --git a/tests/e2e/accuracy/minicpmo_4_5/test_minicpmo_4_5.py b/tests/e2e/accuracy/minicpmo_4_5/test_minicpmo_4_5.py
index 0c942e9c3..ce14f19fe 100644
--- a/tests/e2e/accuracy/minicpmo_4_5/test_minicpmo_4_5.py
+++ b/tests/e2e/accuracy/minicpmo_4_5/test_minicpmo_4_5.py
@@ -42,7 +42,10 @@ _RESULT_DIR = Path(
 _MIN_DAILY_OMNI_ACCURACY = 0.78
 # MiniCPM-o 4.5 reports 70.4 on Video-MME (w/o subs); ~2pp margin like Daily-Omni.
 _MIN_VIDEOMME_ACCURACY = float(os.environ.get("ACC_BENCH_MIN_VIDEOMME_ACCURACY", "0.68"))
-_MAX_SEED_TTS_MEAN_WER = 0.05
+_MAX_SEED_TTS_MEAN_WER = 0.02
+# Full Seed-TTS zh split (seed-tts-eval/zh/meta.lst) is 2020 rows.
+_SEED_TTS_LOCALE = "zh"
+_SEED_TTS_NUM_PROMPTS = 2020
 # Match the validated Daily-Omni / Video-MME client body from the MiniCPM run scripts.
 _DAILY_EXTRA_BODY = {
     "modalities": ["text"],
@@ -270,6 +273,7 @@ def test_minicpmo_4_5_seed_tts_wer_bench(omni_server) -> None:
         skip_seed=False,
         skip_daily=True,
         skip_videomme=True,
+        num_prompts=_SEED_TTS_NUM_PROMPTS,
         max_concurrency=4,
     )
     argv.extend(
@@ -278,6 +282,8 @@ def test_minicpmo_4_5_seed_tts_wer_bench(omni_server) -> None:
             str(_RESULT_DIR),
             "--max-seed-tts-mean-wer",
             str(_MAX_SEED_TTS_MEAN_WER),
+            "--seed-tts-locale",
+            _SEED_TTS_LOCALE,
             "--seed-extra-body-json",
             json.dumps(_SEED_EXTRA_BODY, separators=(",", ":")),
             "--trust-remote-code",
@@ -308,6 +314,8 @@ def test_minicpmo_4_5_duplex_seed_tts_wer_bench(omni_server) -> None:
             str(_RESULT_DIR),
             "--max-seed-tts-mean-wer",
             str(_MAX_SEED_TTS_MEAN_WER),
+            "--seed-tts-locale",
+            _SEED_TTS_LOCALE,
             "--seed-extra-body-json",
             json.dumps({"save_duplex_request_metrics": True}, separators=(",", ":")),
             "--seed-backend",