AutoArena

AutoArena is an open-source tool that automates head-to-head evaluations of GenAI systems using LLM judges, replacing slow, error-prone manual testing with a reliable, repeatable process.

Instead of guessing which model or setup performs better, you can quickly and accurately generate leaderboards comparing different LLMs, RAG setups, or prompt variations side by side, so deciding what to ship becomes a data-backed choice rather than a hunch.

Because every application has its own standards, AutoArena lets you fine-tune custom judges tailored to your specific needs, keeping the automated head-to-head judgement closely aligned with what actually matters to your use case.

Whether you are evaluating LLMs, RAG systems, or other generative AI applications, AutoArena facilitates trustworthy evaluation through automated head-to-head judgement, helping you iterate with confidence.