| Benchmark | Claude Sonnet 4.6 | GPT-5.1 |
|---|---|---|
| AA Agentic Index | 61.6 | 32.2 |
| AA Intelligence | 48.4 | 37.5 |
| AA-LCR | 74 | 76.7 |
| AA-Omniscience | 12.2 | 5.4 |
| arc_agi_1 | 86.5 | 72.8 |
| ARC-AGI-2 | 60.4 | 17.6 |
| arena_elo | 1472 | 1439 |
| arena_text_factuality | 1460 | 1445 |
| arena_vision | 1278 | 1250 |
| Artificial Analysis Coding Index | 63 | 49.4 |
| browsecomp | 76.2 | 50.8 |
| coding_arena_elo | 1523 | 1421 |
| critpt | 3.1 | 4.9 |
| frontiermath_tier_4 | 8.3 | 12.5 |
| gdpval | 54.8 | 25 |
| GPQA Diamond | 89.9 | 88.1 |
| HLE | 49 | 28.5 |
| HLE (with tools) | 46.8 | 42.7 |
| IFBench | 56.6 | 72.9 |
| MCP Atlas | 69.5 | 50.1 |
| mmmlu | 89.3 | 91 |
| MMMU-Pro | 75.6 | 75.5 |
| OmniScience Accuracy | 40.9 | 37.7 |
| OmniScience Non-Hallucination | 51.6 | 48.1 |
| scicode | 47 | 43.3 |
| simpleqa_verified | 29 | 48.9 |
| SWE-bench Verified | 79.6 | 76.3 |
| Tau2 retail | 91.7 | 77.9 |
| TauBench V3 - Banking | 34.4 | 15.9 |
| Terminal-Bench 2.0 | 59.1 | 47.6 |
| Terminal-Bench 2.1 | 71.2 | 52.4 |
| Terminal-Bench Hard | 59.1 | 45.5 |
| vectara_answer_rate | 99.9 | 100 |
| vectara_avg_summary_length | 114.7 | 254.4 |
| vectara_factual_consistency | 89.4 | 89.1 |
| vectara_hallucination_rate ↓ | 10.6 | 12.1 |
| τ²-Bench Telecom (AA run) | 97.9 | 81.9 |
| τ³-Bench | 30.5 | 14 |
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.