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USAMO 2026 — leaderboard

2026 USA Mathematical Olympiad proof-based evaluation reported in Anthropic's Claude Opus 4.8 system card using MathArena-style model-judge grading.

Source: anthropic.com.

Interactive version: theaggregate.ai/benchmark?slug=usamo-2026 · How the rankings work · Data refreshed daily, snapshot 2026-07-22.

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