MathArena - Usamo 2026: leaderboard
USA Mathematical Olympiad 2026: proof-based competition for top US high school students requiring rigorous written arguments across combinatorics, algebra, geometry, and number theory.
Metric: Accuracy (%). Source: matharena.ai. Saturation forecast: Around January 2027. 9 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | GPT-5.5 (xHigh) | 98.21 | #31 (GPT-5.5) |
| 2 | GPT-5.4 (xHigh) | 95.24 | #79 (GPT-5.4) |
| 3 | Gemini 3.1 Pro (Preview) | 74.4 | #58 |
| 4 | DeepSeek V4 Pro (Max) | 60.71 | #102 (DeepSeek V4 Pro) |
| 5 | Kimi K2.6 (Thinking) | 51.19 | #104 (Kimi K2.6) |
| 6 | Claude Opus 4.6 (High) | 47.02 | #63 (Claude Opus 4.6) |
| 7 | Step 3.5 Flash | 44.64 | #270 |
| 8 | Qwen 3.5 397B A17B | 36.31 | #146 |
| 9 | GLM-5 | 35.12 | #141 |
No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.
Interactive version: theaggregate.ai/benchmark?slug=matharena-usamo-2026 · How It Works · Data refreshed daily, snapshot 2026-10-20.