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Arena-Hard: leaderboard

Arena-Hard: Evaluates conversational quality, human preference, helpfulness, and pairwise response judgments.

Source: github.com.

Interactive version: theaggregate.ai/benchmark?slug=arena-hard · How It Works · Data refreshed daily, snapshot 2026-09-05.

Built by Mikhail Doroshenko — AI researcher, co-author of Humanity’s Last Exam. Independent project; no affiliation with any AI lab.
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