Repost claims Claude Opus 5 scored a perfect 42/42 on IMO 2026 problems
inductionheads · x · 2026-07-25
A repost claims that Claude Opus 5 solved the IMO 2026 set with a perfect 42/42 score, described as gold-medal level performance.
- The run reportedly used no agent harness or tools.
- The screenshot says the model produced four independent solutions per problem across six problems, and all 24 solutions were judged correct by a panel of models.
- Human experts also graded one pre-specified solution per problem as correct, yielding 7/7 on each problem and a total of 42/42, above the stated gold cutoff of 29/42.
Related event: Rumor Claims Claude Opus 5 Achieves Perfect 2026 IMO Score Without Tools(5 posts)→
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