RiemannBench (Fable/Mythos) — leaderboard
Metric: Score (%). Source: www-cdn.anthropic.com. 3 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Mythos 5 | 55 |
| 2 | Claude Mythos Preview | 43 |
| 3 | Claude Opus 4.8 | 34 |
Interactive version: theaggregate.ai/benchmark?slug=riemannbench-fable-mythos · How the rankings work · Data refreshed daily, snapshot 2026-07-22.