vLLM

PagedAttention memory management for high-throughput multi-request GPU serving

What vLLM does

  • PagedAttention memory management for high-throughput multi-request GPU serving
  • Supports 200+ model architectures with an OpenAI-compatible API server
  • Originated at UC Berkeley Sky Computing Lab, now the de facto standard for self-hosted production LLM serving

vLLM — straight answers

What is vLLM?

vLLM is listed under Local LLM Runners, in the AI Models & Local Execution category on Flocci AI Tools. PagedAttention memory management for high-throughput multi-request GPU serving. It is free, with no paid plan attached, and it lives at github.com.

Is vLLM free?

vLLM is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 115 entries on Flocci AI Tools with no upgrade path built in.

What can vLLM do?

vLLM does 3 things the catalog singles out: Pagedattention memory management for high-throughput multi-request gpu serving; supports 200+ model architectures with an openai-compatible api server; originated at uc berkeley sky computing lab, now the de facto standard for self-hosted production llm serving.

What is the best free alternative to vLLM?

AnythingLLM is the closest free alternative: it sits in the same Local LLM Runners sub-category and is free. GPT4All, Jan and KoboldCpp also start free. The full list is on the alternatives page.

See the full list →

Ollama

Local LLM Runners
free
  • The default way to run LLMs locally
  • One command to run Llama, Qwen, DeepSeek…
  • OpenAI-compatible local API
  • Free and open-source

LM Studio

Local LLM Runners
free
  • Polished desktop GUI for local models
  • Discover, download and chat with GGUF models
  • Local server with OpenAI-compatible API
  • Free for personal use

Jan

Local LLM Runners
free
  • Open-source, offline ChatGPT alternative
  • No-config, privacy-first GUI
  • Runs fully on your device
  • Free forever

GPT4All

Local LLM Runners
free
  • Private local chat with your documents
  • Runs on modest laptops
  • LocalDocs RAG built in
  • Free and open-source

Open WebUI

Local LLM Runners
free
  • Self-hosted ChatGPT-style interface
  • Works with Ollama and OpenAI-compatible APIs
  • RAG, tools and multi-user
  • Free and open-source

AnythingLLM

Local LLM Runners
free
  • All-in-one local RAG and agents app
  • Chat with your docs privately
  • Works with local or cloud models
  • Free and open-source

Head-to-head comparisons