Anthropic · model
Claude Mythos 5.1 benchmark scores
As of 2026-10-07, Claude Mythos 5.1 (Anthropic) has measured scores on 1 benchmark and estimated scores on 2 more.
| Benchmark | Score | Source |
|---|---|---|
| Terminal-Bench 2.1 (Vals AI) | 89.3% | estimated ± 4.6 pp, low confidence |
| AA Terminal-Bench 4.0 | 56.5% | estimated ± 4.7 pp, high confidence |
| Terminal-Bench 4.0 | 60.9% | measured |