United States of America Mathematical Olympiad 2026 (USAMO 2026)
The premier US mathematical olympiad competition, featuring proof-based problems that require deep mathematical insight and rigorous argumentation at the highest competition level.
Data verified 25 confirmed releases in the last 30 daysStart free briefTop models on USAMO 2026 — August 21, 2026
As of August 21, 2026, Claude Mythos 5 leads the USAMO 2026 leaderboard with 97.6% , followed by Claude Opus 4.8 (96.7%) and MiniMax M3 (85.7%).
Claude Mythos 5
Anthropic
Claude Opus 4.8
Anthropic
MiniMax M3
MiniMax
Leaderboard (3 models)
ScoreAccording to BenchLM.ai, Claude Mythos 5 leads the USAMO 2026 benchmark with a score of 97.6%, followed by Claude Opus 4.8 (96.7%) and MiniMax M3 (85.7%). The scores show moderate spread, with meaningful differences between the top tier and mid-tier models.
3 models have been evaluated on USAMO 2026. The benchmark falls in the Math category. This category carries a 5% weight in BenchLM.ai's overall scoring system. Within that category, USAMO 2026 contributes 10% of the category score, so strong performance here directly affects a model's overall ranking.
About USAMO 2026
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%.
BenchLM freshness & provenance
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.
FAQ
What does USAMO 2026 measure?
The premier US mathematical olympiad competition, featuring proof-based problems that require deep mathematical insight and rigorous argumentation at the highest competition level.
Which model scores highest on USAMO 2026?
Claude Mythos 5 by Anthropic currently leads with a score of 97.6% on USAMO 2026.
How many models are evaluated on USAMO 2026?
3 AI models have been evaluated on USAMO 2026 on BenchLM.
Compare Top Models on USAMO 2026
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