Guides
- User Guide5,261 words, about 23 min to read. Markdown
- Admin Guide4,362 words, about 19 min to read. Markdown
lm-sys/FastChat
FastChat is an open platform for training, serving, and evaluating large language model (LLM) based chatbots. It powers Chatbot Arena (lmarena.ai) and gives you three things on your own hardware:
Generated June 2026 from lm-sys/FastChat at 587d5cf
AI-generated documentation. The library is checked by sampling (three repositories so far); this guide was not individually reviewed. Verify against the project before relying on it.
Source and caveats
Built from the public repository github.com/lm-sys/FastChat at commit 587d5cf. Upstream may have moved on since.
Unofficial; not affiliated with or reviewed by the project. How the guides were made, and how they were checked: guide library.