BioArena is a free, open-source platform for blind evaluation of AI language models on biomedical questions.

The problem: General LLM benchmarks don't tell you which model is best for your specific biomedical domain.

How it works: Ask any biomedical question, two anonymous AI models respond, and you vote on which answer you trust — without knowing which model is which. Each battle is auto-classified into 20 biomedical categories (genomics, immunology, neuroscience, etc.), producing per-domain leaderboards that update daily.

Who it's for: Anyone curious about how different AIs answer biomedical questions. No expertise needed — just vote for the response you trust.

Your expertise shapes the benchmark. One question, two anonymous models, one vote. 1-2 min to help the biomedical community choose better AI.