USAMO 2026 — Anthropic Opus 4.7 card; distinct competition year from usamo_2025
| # | Model | Vendor | Best score | Runs | Last seen |
|---|---|---|---|---|---|
| 1 | GPT-5.5 | OpenAI | 98.2 | 1 | 2026-08-23 |
| 2 | Claude Opus 4.8 | Anthropic | 96.7 | 1 | 2026-07-07 |
| 3 | GPT-5.4 | OpenAI | 95.2 | 1 | 2026-08-23 |
| 4 | Claude Sonnet 5 | Anthropic | 79.5 | 1 | 2026-07-07 |
| 5 | Gemini 3.1 Pro | 74.4 | 1 | 2026-08-23 | |
| 6 | Claude Opus 4.7 | Anthropic | 69.3 | 1 | 2026-05-03 |
| 7 | Claude Opus 4.6 | Anthropic | 66.2 | 2 | 2026-08-23 |
| 8 | DeepSeek-V4-Pro | DeepSeek | 60.7 | 1 | 2026-08-23 |
| 9 | Claude Sonnet 4.6 | Anthropic | 55 | 1 | 2026-07-07 |
| 10 | Kimi K2.6 | Moonshot | 51.2 | 1 | 2026-08-23 |
| 11 | Step 3.5 Flash | StepFun | 44.6 | 1 | 2026-08-23 |
| 12 | Qwen3.5 397B A17B | Alibaba | 36.3 | 1 | 2026-08-23 |
| 13 | GLM-5 | Z.ai | 35.1 | 1 | 2026-08-23 |
Best tracked score per model (default configuration; source-attributed and verification-tiered). Open a model for its full benchmark surface, provenance and pricing.