diff --git a/requirements.txt b/requirements.txt
index 88cb7b3a5..45339bd42 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # Core dependencies
-vllm>=0.2.0
+vllm>=0.9.0
 torch>=2.0.0
 transformers>=4.30.0
 numpy>=1.21.0
diff --git a/vllm_omni/cli.py b/vllm_omni/cli.py
deleted file mode 100644
index b14c34205..000000000
--- a/vllm_omni/cli.py
+++ /dev/null
@@ -1,180 +0,0 @@
-"""
-Command-line interface for vLLM-omni.
-"""
-
-import argparse
-import asyncio
-import logging
-import sys
-from pathlib import Path
-from typing import Optional
-
-from .async_llm import AsyncLLM
-from .omni_engine import OmniEngine
-from .configs import load_config
-
-
-def setup_logging(level: str = "INFO") -> None:
-    """Set up logging configuration."""
-    logging.basicConfig(
-        level=getattr(logging, level.upper()),
-        format="%(asctime)s - %(name)s - %(levelname)s - %(message)s",
-        stream=sys.stdout
-    )
-
-
-async def run_server(
-    config_path: Optional[str] = None,
-    host: str = "0.0.0.0",
-    port: int = 8000,
-    log_level: str = "INFO"
-) -> None:
-    """Run the vLLM-omni server."""
-    setup_logging(log_level)
-    logger = logging.getLogger(__name__)
-    
-    # Load configuration
-    config = load_config(config_path) if config_path else {}
-    
-    # Initialize components
-    async_llm = AsyncLLM(config)
-    omni_engine = OmniEngine(config)
-    
-    logger.info(f"Starting vLLM-omni server on {host}:{port}")
-    
-    try:
-        # Start the server (implementation depends on chosen framework)
-        # This is a placeholder for the actual server implementation
-        logger.info("Server started successfully")
-        
-        # Keep the server running
-        while True:
-            await asyncio.sleep(1)
-            
-    except KeyboardInterrupt:
-        logger.info("Shutting down server...")
-    except Exception as e:
-        logger.error(f"Server error: {e}")
-        sys.exit(1)
-
-
-def run_gradio(
-    config_path: Optional[str] = None,
-    port: int = 7860,
-    share: bool = False,
-    log_level: str = "INFO"
-) -> None:
-    """Run the Gradio interface."""
-    setup_logging(log_level)
-    logger = logging.getLogger(__name__)
-    
-    try:
-        import gradio as gr
-        from .api_interfaces.gradio import GradioInterface
-        
-        # Load configuration
-        config = load_config(config_path) if config_path else {}
-        
-        # Initialize Gradio interface
-        interface = GradioInterface(config)
-        
-        logger.info(f"Starting Gradio interface on port {port}")
-        interface.launch(server_port=port, share=share)
-        
-    except ImportError:
-        logger.error("Gradio is not installed. Install it with: pip install gradio")
-        sys.exit(1)
-    except Exception as e:
-        logger.error(f"Gradio interface error: {e}")
-        sys.exit(1)
-
-
-def main() -> None:
-    """Main CLI entry point."""
-    parser = argparse.ArgumentParser(
-        description="vLLM-omni: Multi-modality models inference and serving"
-    )
-    
-    subparsers = parser.add_subparsers(dest="command", help="Available commands")
-    
-    # Server command
-    server_parser = subparsers.add_parser("server", help="Run the server")
-    server_parser.add_argument(
-        "--config", "-c",
-        type=str,
-        help="Path to configuration file"
-    )
-    server_parser.add_argument(
-        "--host",
-        type=str,
-        default="0.0.0.0",
-        help="Host to bind to (default: 0.0.0.0)"
-    )
-    server_parser.add_argument(
-        "--port", "-p",
-        type=int,
-        default=8000,
-        help="Port to bind to (default: 8000)"
-    )
-    server_parser.add_argument(
-        "--log-level",
-        type=str,
-        choices=["DEBUG", "INFO", "WARNING", "ERROR"],
-        default="INFO",
-        help="Log level (default: INFO)"
-    )
-    
-    # Gradio command
-    gradio_parser = subparsers.add_parser("gradio", help="Run the Gradio interface")
-    gradio_parser.add_argument(
-        "--config", "-c",
-        type=str,
-        help="Path to configuration file"
-    )
-    gradio_parser.add_argument(
-        "--port", "-p",
-        type=int,
-        default=7860,
-        help="Port to bind to (default: 7860)"
-    )
-    gradio_parser.add_argument(
-        "--share",
-        action="store_true",
-        help="Create a public link"
-    )
-    gradio_parser.add_argument(
-        "--log-level",
-        type=str,
-        choices=["DEBUG", "INFO", "WARNING", "ERROR"],
-        default="INFO",
-        help="Log level (default: INFO)"
-    )
-    
-    # Version command
-    version_parser = subparsers.add_parser("version", help="Show version information")
-    
-    args = parser.parse_args()
-    
-    if args.command == "server":
-        asyncio.run(run_server(
-            config_path=args.config,
-            host=args.host,
-            port=args.port,
-            log_level=args.log_level
-        ))
-    elif args.command == "gradio":
-        run_gradio(
-            config_path=args.config,
-            port=args.port,
-            share=args.share,
-            log_level=args.log_level
-        )
-    elif args.command == "version":
-        from . import __version__
-        print(f"vLLM-omni version {__version__}")
-    else:
-        parser.print_help()
-
-
-if __name__ == "__main__":
-    main()
diff --git a/vllm_omni/core/dit_cache_manager.py b/vllm_omni/core/dit_cache_manager.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/vllm_omni/dit_cache_interface.py b/vllm_omni/dit_cache_interface.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/vllm_omni/engine/output_processor.py b/vllm_omni/engine/output_processor.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/vllm_omni/engine/processor.py b/vllm_omni/engine/processor.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/vllm_omni/sample/__init__.py b/vllm_omni/sample/__init__.py
new file mode 100644
index 000000000..e69de29bb