The premier US mathematical olympiad competition, featuring proof-based problems that require deep mathematical insight and rigorous argumentation at the highest competition level.
BenchLM mirrors the published score view for USAMO 2026. Claude Mythos Preview leads the public snapshot at 97.6%. BenchLM does not use these results to rank models overall.
Year
2026
Tasks
6 proof-based problems
Format
Mathematical proof construction
Difficulty
International olympiad level
USAMO represents the highest tier of US math competitions, serving as the selection exam for the International Mathematical Olympiad team. Problems require full proofs rather than just numerical answers. Mythos Preview scored 97.6%, GPT-5.4 scored 95.2%, Gemini 3.1 Pro scored 74.4%.
Version
USAMO 2026 2026
Refresh cadence
Quarterly
Staleness state
Current
Question availability
Public benchmark set
BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.
The premier US mathematical olympiad competition, featuring proof-based problems that require deep mathematical insight and rigorous argumentation at the highest competition level.
Claude Mythos Preview by Anthropic currently leads with a score of 97.6% on USAMO 2026.
1 AI models have been evaluated on USAMO 2026 on BenchLM.
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