This release is a pre-release and may not be stable for production use.
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
1 maintainer
Metadata
1 maintainer
Release files for vllm-sr 0.1.0b2.dev20260119204301
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