vLLM

tool active open-source

A high-throughput LLM inference and serving library using PagedAttention for efficient memory management. vLLM is the leading open-source solution for self-hosted LLM serving, offering 10-24x higher throughput than naive implementations.

Implements

Concepts this tool claims to implement:

  • Core purpose is serving LLMs efficiently. AsyncLLMEngine for production deployments. OpenAI-compatible API server.

  • Inference primary

    Optimized inference with PagedAttention, continuous batching, and tensor parallelism for multi-GPU.

  • OpenAI API secondary

    Built-in OpenAI-compatible API server. Drop-in replacement for OpenAI API with local models.

  • Streaming secondary

    Streaming support with Server-Sent Events. Compatible with OpenAI streaming format.

Integration Surfaces

  • Python SDK
  • OpenAI-compatible API
  • Docker

Details

Vendor
vLLM Team (UC Berkeley origin)
License
Apache-2.0
Runs On
local, cloud
Used By
system

Notes

vLLM's PagedAttention innovation dramatically improved LLM serving efficiency by managing KV-cache like virtual memory. It's the go-to choice for self-hosted LLM serving in production.