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Chatbot Arena

Chatbot Arena is an open platform for crowdsourced AI benchmarking, developed by researchers at UC Berkeley SkyLab and LMArena.
Collective - Host: opensource - https://opencollective.com/chatbot-arena - Website: https://lmarena.ai/?about - Code: https://github.com/lm-sys/FastChat

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github.com/lm-sys/FastChat

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

Stars: 39,047 - Last synced: 27 Jul 2026