LMSYS Org

The Large Model Systems Organization develops large models and systems that are open, accessible, and scalable.

Vicuna


A chatbot impressing GPT-4 with 90%* ChatGPT quality, available in 7B and 13B sizes.

Chatbot Arena


Scalable and gamified evaluation of LLMs via crowdsourcing and Elo rating systems.

FastChat-T5


A compact yet powerful chatbot with a context length of 4K. Ready for commercial use.

FastChat


An open platform for training, finetuning, serving, and evaluating LLM-based chatbots.