vllm-sr 0.1.0b2.dev20260119084506

vLLM Semantic Router - Intelligent routing for Mixture-of-Models

vLLM Semantic Router

Intelligent Router for Mixture-of-Models (MoM).

GitHub: https://github.com/vllm-project/semantic-router

Quick Start

Installation

# Install from PyPI
pip install vllm-sr

# Or install from source (development)
cd src/vllm-sr
pip install -e .

Usage

# Initialize vLLM Semantic Router Configuration
vllm-sr init

# Start the router (includes dashboard)
vllm-sr serve

# Open dashboard in browser
vllm-sr dashboard

# View logs
vllm-sr logs router
vllm-sr logs envoy
vllm-sr logs dashboard

# Check status
vllm-sr status

# Stop
vllm-sr stop

Features

• Router: Intelligent request routing based on intent classification
• Envoy Proxy: High-performance proxy with ext_proc integration
• Dashboard: Web UI for monitoring and testing (http://localhost:8700)
• Metrics: Prometheus metrics endpoint (http://localhost:9190/metrics)

Endpoints

After running vllm-sr serve, the following endpoints are available:

Endpoint	Port	Description
Dashboard	8700	Web UI for monitoring and Playground
API	8888*	Chat completions API (configurable in config.yaml)
Metrics	9190	Prometheus metrics
gRPC	50051	Router gRPC (internal)

*Default port, configurable via listeners in config.yaml

Configuration

File Descriptor Limits

The CLI automatically sets file descriptor limits to 65,536 for Envoy proxy. To customize:

export VLLM_SR_NOFILE_LIMIT=100000  # Optional (min: 8192)
vllm-sr serve

License

Apache 2.0