FrontierMath — Tier 4 (hardest) — Epoch AI's FrontierMath, Tier 4 difficulty split.
| # | Model | Vendor | Best score | Runs | Last seen |
|---|---|---|---|---|---|
| 1 | GPT-5.5 Pro | OpenAI | 39.6 | 1 | 2026-05-20 |
| 2 | GPT-5.4 Pro | OpenAI | 37.5 | 1 | 2026-05-20 |
| 3 | GPT-5.5 | OpenAI | 35.4 | 1 | 2026-05-20 |
| 4 | GPT-5.2 Pro | OpenAI | 31.3 | 1 | 2026-05-20 |
| 5 | Claude Opus 4.8 | Anthropic | 31.3 | 1 | 2026-06-13 |
| 6 | GPT-5.4 | OpenAI | 27.1 | 1 | 2026-05-20 |
| 7 | Claude Opus 4.7 | Anthropic | 22.9 | 1 | 2026-05-20 |
| 8 | Claude Opus 4.6 | Anthropic | 22.9 | 2 | 2026-05-20 |
| 9 | GPT-5.2 | OpenAI | 18.8 | 4 | 2026-05-20 |
| 10 | Gemini 3 Pro | 18.8 | 1 | 2026-05-20 | |
| 11 | Gemini 3.1 Pro | 16.7 | 1 | 2026-05-20 | |
| 12 | Muse Spark | Meta | 14.6 | 1 | 2026-05-20 |
| 13 | GPT-5 Pro | OpenAI | 14.6 | 1 | 2026-05-20 |
| 14 | Gemini 3.5 Flash | 14.6 | 1 | 2026-05-29 | |
| 15 | Kimi K2.6 | Moonshot | 14.6 | 1 | 2026-05-20 |
| 16 | GPT-5 | OpenAI | 12.5 | 1 | 2026-05-20 |
| 17 | GPT-5.1 | OpenAI | 12.5 | 3 | 2026-06-20 |
| 18 | GLM-5.1 | Z.ai | 12.5 | 1 | 2026-05-20 |
| 19 | Gemini 2.5 Deep Think | 10.4 | 1 | 2026-05-20 | |
| 20 | Qwen3.6 Plus | Alibaba | 8.3 | 1 | 2026-05-20 |
| 21 | Claude Sonnet 4.6 | Anthropic | 8.3 | 1 | 2026-06-23 |
| 22 | o4-mini | OpenAI | 6.3 | 2 | 2026-05-20 |
| 23 | GPT-5.4 nano | OpenAI | 6.3 | 1 | 2026-05-20 |
| 24 | GPT-5 mini | OpenAI | 6.3 | 2 | 2026-05-20 |
| 25 | Kimi K2.5 | Moonshot | 4.2 | 1 | 2026-05-20 |
| 26 | Qwen3.6 Max Preview | Alibaba | 4.2 | 1 | 2026-06-02 |
| 27 | Claude Sonnet 4.5 | Anthropic | 4.2 | 2 | 2026-05-30 |
| 28 | Claude 4 Opus | Anthropic | 4.2 | 1 | 2026-05-20 |
| 29 | Gemini 2.5 Flash | 4.2 | 1 | 2026-05-20 | |
| 30 | Gemini 2.5 Pro | 4.2 | 1 | 2026-05-20 | |
| 31 | o3-mini | OpenAI | 4.2 | 1 | 2026-05-20 |
| 32 | Claude Opus 4.5 | Anthropic | 4.2 | 1 | 2026-05-20 |
| 33 | Gemini 3 Flash Preview | 4.2 | 1 | 2026-05-20 | |
| 34 | Claude Opus 4.1 | Anthropic | 4.2 | 1 | 2026-05-20 |
| 35 | GLM-4.6 | Z.ai | 2.1 | 1 | 2026-05-20 |
| 36 | GLM-5 | Z.ai | 2.1 | 1 | 2026-05-20 |
| 37 | DeepSeek-V3.2 | DeepSeek | 2.1 | 1 | 2026-05-20 |
| 38 | Grok 4 | SpaceXAI | 2.1 | 1 | 2026-05-20 |
| 39 | GPT-5 nano | OpenAI | 2.1 | 2 | 2026-05-20 |
| 40 | Grok 4 Heavy (web app) | SpaceXAI | 2.1 | 1 | 2026-05-20 |
| 41 | o3 | OpenAI | 2.1 | 1 | 2026-05-20 |
| 42 | GPT-5.4 mini | OpenAI | 2.1 | 1 | 2026-05-20 |
| 43 | Claude Haiku 4.5 | Anthropic | 2.1 | 1 | 2026-05-20 |
| 44 | Grok 3 | SpaceXAI | 0 | 2 | 2026-06-19 |
| 45 | Kimi K2 (Reasoning) | Moonshot | 0 | 1 | 2026-05-20 |
| 46 | GLM-4.7 | Z.ai | 0 | 1 | 2026-05-20 |
| 47 | Qwen 3.6 Flash | Alibaba | 0 | 1 | 2026-05-20 |
| 48 | Qwen3.5 Flash | Alibaba | 0 | 1 | 2026-08-07 |
| 49 | Claude 3.5 Sonnet | Anthropic | 0 | 2 | 2026-05-20 |
| 50 | GPT-4.1 | OpenAI | 0 | 1 | 2026-05-20 |
| 51 | Claude Sonnet 4 | Anthropic | 0 | 1 | 2026-05-20 |
Best tracked score per model (default configuration; source-attributed and verification-tiered). Open a model for its full benchmark surface, provenance and pricing.