Claude Fable 5.1
HumanEval ratings
Not rated yet — ratings appear with the next official snapshot once this model has eligible votes.
External benchmarks
Curated third-party results, shown as context with provenance — the HumanEval rating from blind human votes remains the verdict.
General Intelligence
Reasoning
| LiveBench — Reasoning | 91.7 | 2026-09-07 | LiveBench |
| Humanity's Last Exam | 46.5%42.6% – 50.4% | 2026-09-08 | Scale AI SEAL — Humanity's Last Exam |
Coding
| LiveBench — Coding | 86.4 | 2026-09-07 | LiveBench |
Mathematics
| LiveBench — Mathematics | 97.0 | 2026-09-07 | LiveBench |
| OTIS Mock AIME 2024–2025 | 100.0%100.0% – 100.0% | 2026-09-01 | Epoch AI Benchmarking Hub |
Agentic
| LiveBench — Agentic Coding | 66.1 | 2026-09-07 | LiveBench |
| Terminal-Bench 4.0 | 57.9%54.1% – 61.6% | 2026-09-01 | Terminal-Bench |
Language
| LiveBench — Language | 89.5 | 2026-09-07 | LiveBench |
Data analytics
| LiveBench — Data Analysis | 80.3 | 2026-09-07 | LiveBench |
Instruction following
| LiveBench — Instruction Following | 73.0 | 2026-09-07 | LiveBench |
Benchmark percentile by metric group
Percentile of this model within the 19 listed LLM models per metric group (100 = best, averaged across the group's external benchmarks), against the roster median. External data only — not the HumanEval rating.
Win rate by opponent
No eligible head-to-head votes yet. Ties count as half a win for each side.
Sample battles
Curated prompts only, with vote tallies — voter identities are never published.
No published sample battles yet — battles appear here once this model has eligible votes on curated prompts.