# LMArena

Crowdsourced side-by-side model comparisons.

LMArena (formerly Chatbot Arena) collects blind human votes on paired LLM responses. Use it to see which models win on open-ended chat tasks before you pick an API.

Price: Free to compare models; no paid tier on the public arena.. Site: https://lmarena.ai/.

Also on the [web page](https://aibenchmarkindex.com/apps/lmarena).

> **Check before you compare.** Benchmark methods and leaderboards change. Follow the cited primary source before using a result in a decision.