LMArena (Chatbot Arena)

Category: AI Assistants & Search · Free to use

Free head-to-head battles across every top AI model — vote and see the leaderboard.

LMArena is the free, open crowdsourced leaderboard that lets you battle-test any two frontier AI models side-by-side and vote for the winner — powering the world's most trusted LLM ranking. Chat with GPT-5, Claude 4, Gemini 3, Llama 4, Qwen, DeepSeek and hundreds more for free, compare their answers blindly, and see the live Elo leaderboard. From UC Berkeley SkyLab, open-source and beloved by every AI researcher.

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LMArena · lmarena · Chatbot Arena · LMSYS Chatbot Arena · AI leaderboard free · compare LLMs free · free GPT-5 · free Claude · AI Assistants & Search · AI Tools & Development · free AI tool · Elo LLM ranking

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