Every board we track
29 AI leaderboards, who is #1 on each, and when each one last published.
| Board | Category | #1 | Score | Published | Models |
|---|---|---|---|---|---|
 Artificial Analysis Intelligence Index | Reasoning |  Claude Opus 5.5 | 57.6 | Sep 24, 2026 | 100 |
 Humanity's Last Exam | Reasoning |  GPT-6 Astra | 54.8% | Sep 24, 2026 | 42 |
 GPQA Diamond (Epoch AI runs) | Reasoning | GPT-6 Astra | 95.8% | Sep 2, 2026 | 100 |
| Epoch Capabilities Index | Reasoning | GPT-6 Astra | 166.6 | Sep 24, 2026 | 100 |
 ARC-AGI-2 | Reasoning | GPT-6 Astra | 95.0% | Sep 22, 2026 | 78 |
 LiveBench | Reasoning | Claude Fable 5.1 | 83.4% | Jun 25, 2026 | 59 |
 MMLU-Pro | Reasoning |  Gemini 3.1 Pro Preview | 91.2% | Stale since 2026-03-11 | 100 |
 Hugging Face Open LLM Leaderboard | Reasoning | none | Retired |
Scores as published by each board on the capture date. Model names and logos belong to their owners; logos via logo.dev.