WebDev Arena
A live, community-driven leaderboard where two LLMs compete head-to-head to build interactive web applications from user-submitted prompts, with human votes ranking models by a Bradley-Terry (Elo-like) score.
What this benchmark measures
A live, community-driven leaderboard where two LLMs compete head-to-head to build interactive web applications from user-submitted prompts, with human votes ranking models by a Bradley-Terry (Elo-like) score.
Rows on this page are sourced from public benchmark artifacts, leaderboard exports, or source-linked model reports. Each row keeps benchmark version, source model name, and available run details attached to the score.
The metric shown here is Elo. It should be interpreted within WebDev Arena, not compared as part of a site-wide ranking.
Frequently asked
What is WebDev Arena?
A live, community-driven leaderboard where two LLMs compete head-to-head to build interactive web applications from user-submitted prompts, with human votes ranking models by a Bradley-Terry (Elo-like) score. It is a chat preference benchmark measured by Elo.
What does Elo mean on WebDev Arena?
WebDev Arena reports Elo; higher is better. Scores are shown only within WebDev Arena and are never averaged with other benchmarks.
What is the top reported WebDev Arena score?
Claude Opus 4.7 has the top reported score on WebDev Arena: 1562 (Elo).
Why do WebDev Arena scores differ across runs?
Harness, scaffold, reasoning effort, and prompt setup change results, so two runs of the same model can differ. evals.report keeps each score with its run context so the differences stay visible.
Does evals.report rank models across benchmarks?
No. WebDev Arena scores are shown within their own metric; evals.report never combines benchmarks into a composite ranking or a single "best model".