waybarrios

Hey HN! I built vLLM-MLX because vLLM falls back to CPU-only mode on macOS,which is painfully slow on Apple Silicon machines.

vLLM-MLX brings native GPU acceleration using Apple's MLX framework, with:

  • OpenAI-compatible API (drop-in replacement)
  • Multimodal: Text, Images, Video, Audio in one server
  • Continuous batching for concurrent users (3.4x speedup)
  • TTS in 10+ languages (Kokoro, Chatterbox)
  • MCP tool calling support

  Performance on M4 Max:
  - Llama-3.2-1B-4bit: 464 tok/s
  - Qwen3-0.6B: 402 tok/s
  - Whisper STT: 197x real-time

Quick start: pip install -e . vllm-mlx serve mlx-community/Llama-3.2-3B-Instruct-4bit

Works with standard OpenAI SDK. Happy to answer questions!

  GitHub: https://github.com/waybarrios/vllm-mlx