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lm-sys/FastChatpublicPythongithub.com/lm-sys/FastChat
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FastChat

An open platform for training, serving, and evaluating large language models. Release repo for Vicuna and Chatbot Arena.

PYTHONAI MLDECLINING VELOCITYTRENDING #2655
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// OWNER · lm-sys · REPO SNAPSHOT

github.com/lm-sys

lm-sys

An open platform for training, serving, and evaluating large language models. Release repo for Vicuna and Chatbot Arena.

GitHublm-sys
STARS39,503+8 · 7d
FORKS4,785+0 · 7d
CONTRIBUTORS0maintainer graph thin
OPEN ISSUES · PRS892· 0 
LICENSE—no license file
LANGUAGEPython 
FOUNDED—
LOCATION—
MEMBERS—
PUBLIC REPOS—
TOTAL STARS—
FOCUS—
FUNDING—

//STAR HISTORY · 12M

+94 all-time-window
Stars · cumulative39,503 · today
//WHY IT'S TRENDING· narrative synthesis · medium confidence

lm-sys/FastChat is sitting at #2655 on the trending leaderboard with a pulse of 2/100 with no cross-source channels firing yet — GitHub-stars-only signal so far.

The 7-day star delta is +8 (+0.0%) against a base of 39,503, so the headline number is category momentum more than a personal breakout. What's actually moving is the Python ai-ml space.

Watch-outs: no tagged release on record (treat as pre-stable).

↻ refreshed 22m ago· next sync in 43m· sourced from 0 channels · 0 mentions / 24h

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▌ FAQ · answers from the data spine

What is lm-sys/FastChat?
An open platform for training, serving, and evaluating large language models. Release repo for Vicuna and Chatbot Arena.
Who maintains FastChat?
Maintained by lm-sys (the owner) on GitHub.
What language is FastChat written in?
Primarily Python.
When was FastChat created? When was the last update?
Created March 19, 2023 · last commit May 1, 2026.
How do I install FastChat?
Clone the repo:
git clone https://github.com/lm-sys/FastChat.git
Then follow the README in the cloned directory.
Is FastChat actively maintained?
stalled — no commits for an extended period

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