# LMSYS Chatbot Arena

> Human-preference LLM ranking via pairwise comparisons

- Category: [Benchmarks & Leaderboards](https://ailandscape.org/category/benchmarks-leaderboards) › Model Rankings
- Homepage: https://lmarena.ai
- Repository: https://github.com/lm-sys/FastChat
- X (Twitter): https://x.com/arena
- Tags: evaluation, benchmarks, human-eval
- Added to the landscape: 2026-03-18

## Similar tools in Model Rankings

- [OpenRouter Rankings](https://ailandscape.org/tool/openrouter-rankings): Model market share, use-case categories, and app rankings on OpenRouter

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Part of [AI Landscape](https://ailandscape.org), an open map of the AI ecosystem. Web page: https://ailandscape.org/tool/lmsys-chatbot-arena · Index for AI assistants: https://ailandscape.org/llms.txt