AnthropicClaude
Claude Fable 5.1
Anthropic · Claude. Released Sep 1, 2026.
Claude Fable 5.1 is a model from Anthropic in the Claude family, released Sep 1, 2026. evals.report tracks 5 reported Claude Fable 5.1 benchmark scores across FrontierCode, ARC-AGI-1, ARC-AGI-2, Humanity's Last Exam, AA-Omniscience: Knowledge and Hallucination Benchmark — each shown with its benchmark, metric, source status, and date, and never combined into a single ranking.
5 results
Benchmark results 5
Compare this model| Benchmark | Category | Score | Metric | Status | Date | |
|---|---|---|---|---|---|---|
| FrontierCode | Coding | 50.9% | weighted score (Main) | Official | Sep 1, 2026 | Details |
| ARC-AGI-1 | Reasoning | 97.5% | accuracy | Official | Sep 1, 2026 | Details |
| ARC-AGI-2 | Reasoning | 90% | accuracy | Official | Sep 1, 2026 | Details |
| Humanity's Last Exam | Reasoning | 60.9% | accuracy | Verified | Sep 1, 2026 | Details |
| AA-Omniscience: Knowledge and Hallucination Benchmark | Reasoning | 43 | AA-Omniscience Index | Official | Sep 1, 2026 | Details |