| Benchmark | Claude Fable 5 | Claude Sonnet 4.5 |
|---|---|---|
| AA Agentic Index | 56.6 | 50.6 |
| AA Intelligence | 62.1 | 37.4 |
| AA-LCR | 76.7 | 68.3 |
| AA-Omniscience | 43.3 | -0.1 |
| arc_agi_1 | 90.5 | 63.7 |
| ARC-AGI-2 | 76.8 | 13.6 |
| arena_elo | 1508 | 1456 |
| arena_text_factuality | 1486 | 1448 |
| Artificial Analysis Coding Index | 76.5 | 52.1 |
| browsecomp | 88 | 24.1 |
| charxiv_rq | 89.4 | 67.2 |
| coding_arena_elo | 1626 | 1392 |
| critpt | 28.6 | 1.1 |
| gdpval | 61.9 | 40.4 |
| GPQA Diamond | 92.6 | 83.4 |
| HLE | 64.5 | 19.8 |
| HLE (with tools) | 64.5 | 32 |
| IFBench | 63.5 | 57.3 |
| MCP Atlas | 84.7 | 59.5 |
| MMMU-Pro | 84.2 | 68.7 |
| OmniScience Accuracy | 65.3 | 32.9 |
| OmniScience Non-Hallucination | 36.4 | 50.9 |
| OSWorld-Verified | 85 | 61.4 |
| scicode | 60.2 | 45 |
| simplebench | 81.9 | 54.3 |
| simpleqa_verified | 68.3 | 23.6 |
| SWE-bench Multilingual | 86.6 | 68 |
| SWE-bench Pro | 80 | 43.6 |
| SWE-bench Verified | 95 | 82 |
| TauBench V3 - Banking | 38.1 | 24.5 |
| Terminal-Bench 2.1 | 88 | 55.8 |
| Terminal-Bench Hard | 62.9 | 35.6 |
| toolathlon | 61.7 | 41 |
| Toolathlon Avg turns | 19.8 | 32 |
| Toolathlon Pass@∞ | 55.6 | 28.7 |
| τ²-Bench Telecom (AA run) | 98.5 | 78.1 |
| τ³-Bench | 26.8 | 19 |
Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing.