Humanity's Last Exam (Fable/Mythos Tools) — leaderboard
Metric: Score (%). Source: www-cdn.anthropic.com. 5 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Mythos Preview | 64.7 |
| 2 | Claude Mythos 5 | 64.5 |
| 3 | Claude Opus 4.8 | 57.9 |
| 4 | GPT-5.5 | 52.2 |
| 5 | Gemini 3.1 Pro (Preview) | 51.4 |
Interactive version: theaggregate.ai/benchmark?slug=humanity-s-last-exam-fable-mythos-tools · How the rankings work · Data refreshed daily, snapshot 2026-07-22.