Hugging Face Spaces
huggingface.co
Thousands of runnable AI demos, no model installed on your machine
No sign-up
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arena.ai
Put one prompt to two anonymous models and vote for the better answer.
The platform previously called LMArena and, before that, Chatbot Arena. Battle mode sends your prompt to two unnamed models side by side; you pick the better reply and the identities are revealed afterwards, and those votes feed the public Elo leaderboard that everyone quotes. It is the quickest way to check a model claim against your own kind of question rather than a benchmark. Conversations are collected for research and can be published, so treat everything you type as public.
Questions
Works the moment the page loads. No account, no email, no trial. Prompts and votes are collected for research and can end up in public datasets.
Yes. Arena sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Prompts and votes are collected for research and can end up in public datasets.
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