Model comparison
Claude 3.7 Sonnet vs GPT-5.5
GPT-5.5 is the stronger model overall, scoring 63.4 to 39.5 on the Noometry Index.
Last verified . 30 shared benchmarks.
Summary
- They share 30 benchmarks with published results for both. Claude 3.7 Sonnet scores higher in 1 category and GPT-5.5 in 9 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.5 leads 72.8 to 18.6.
- The biggest single-benchmark swing is ARC-AGI-2: 0.9% for Claude 3.7 Sonnet and 85% for GPT-5.5.
Side by side
| Claude 3.7 Sonnet | GPT-5.5 | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 39.5 | 63.4 |
| Released | 2025-02-24 | 2026-04-23 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 128K |
| Input $ / M tokens | — | $5 |
| Output $ / M tokens | — | $30 |
| Results tracked | 58 | 71 |
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Category by category
Coding GPT-5.5 leads
Claude 3.7 Sonnet: 40.6 (#136), GPT-5.5: 58.2 (#17)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| SWE-bench Verified | 61% | 80.6% |
| GSO | 3.8% | 40.2% |
| LMArena Coding | 1361 | 1494 |
| DeepSWE | — | 67% |
| FrontierCode | — | 43% |
| SWE-bench Verified (bash only) | 52.8% | — |
| Aider Polyglot | 64.9% | — |
| LMArena WebDev | — | 1513 |
| SciCode | — | 56.1% |
| WeirdML | — | 84.9% |
| LiveBench Coding | 74.5% | — |
| MirrorCode | — | 10% |
| CadEval | 54% | — |
| ALE-Bench | — | 1,943 |
Agentic & Tool Use GPT-5.5 leads
Claude 3.7 Sonnet: 34.1 (#50), GPT-5.5: 50.7 (#6)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| DeepResearch Bench | 43.6% | 54% |
| Terminal-Bench | — | 84.7% |
| APEX-Agents | — | 55.1% |
| OSWorld 2.0 | — | 13% |
| Remote Labor Index | — | 6.3% |
| TheAgentCompany | 30.9% | — |
| τ²-bench Banking | — | 44.6% |
| Cybench | 20% | — |
| OSWorld | 35.8% | — |
| PostTrainBench | — | 27.2% |
| ExploitBench | — | 47.4% |
| GBAEval | — | 53.2% |
| GDP.pdf | — | 26% |
| LMArena Search | — | 1242 |
| METR Time Horizons | 60% | — |
| Vending-Bench 2 | — | 7,524 |
Reasoning GPT-5.5 leads
Claude 3.7 Sonnet: 18.6 (#277), GPT-5.5: 72.8 (#11)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| ARC-AGI-2 | 0.9% | 85% |
| SimpleBench | 46.4% | 69% |
| ARC-AGI-1 | 28.6% | 95% |
| LMArena Hard Prompts | 1333 | 1489 |
| Epoch Capabilities Index | 141.16 | 159.1 |
| ForecastBench | 61.8 | 60.6 |
| Kagi LLM Benchmark | — | 88.8% |
| NYT Connections (extended) | — | 96.2% |
| CritPt | — | 27.1% |
| Chess Puzzles | — | 54% |
| EnigmaEval | 4.2% | — |
| EBR-Bench | — | 34.3% |
| LiveBench Reasoning | 87.8% | — |
| Mystery Game Puzzles | — | 56% |
| DTBench | — | 96% |
| LiveBench Data Analysis | 74% | — |
| LMCA | — | 54.3% |
| Surface Evolver Bench | — | 88.1% |
| Bench to the Future 3 | — | 0.14 |
| LiveBench | 76.1% | — |
Math GPT-5.5 leads
Claude 3.7 Sonnet: 37.5 (#153), GPT-5.5: 81.7 (#11)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 57.8% | 100% |
| LMArena Math | 1337 | 1486 |
| FrontierMath (Feb 2025 set) | 4.1% | 51.7% |
| FrontierMath (Tiers 1-3) | — | 85.3% |
| FrontierMath Tier 4 | — | 72.5% |
| MathArena Final-Answer Competitions | — | 94.3% |
| ProofBench | — | 50% |
| Omni-MATH | 33% | — |
| LiveBench Math | 79% | — |
| MATH Level 5 | 91.2% | — |
| FrontierMath Erdős | — | 0% |
| FrontierMath Tier 4 (v1) | — | 35.4% |
Knowledge GPT-5.5 leads
Claude 3.7 Sonnet: 39.8 (#130), GPT-5.5: 64.4 (#17)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| GPQA Diamond | 79.7% | 94% |
| LMArena Expert | 1321 | 1508 |
| Humanity's Last Exam | 8% | — |
| SimpleQA Verified | — | 63% |
| MMLU-Pro | 78.4% | — |
| Confabulations | 14.7% | — |
| Vectara Hallucination Rate | — | 9.3% |
| GPQA (HELM) | 60.8% | — |
Multimodal GPT-5.5 leads
Claude 3.7 Sonnet: 33.7 (#95), GPT-5.5: 46.9 (#12)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| LMArena Vision | 1169 | 1297 |
| GeoBench | 68% | — |
| VPCT | 39% | — |
| Blueprint-Bench 2 | — | 36.2% |
| Furniture Assembly | — | 44.2% |
| LMArena Document | — | 1486 |
| SpatialViz-Bench | 33.9% | — |
Multilingual GPT-5.5 leads
Claude 3.7 Sonnet: 44.1 (#179), GPT-5.5: 56.4 (#20)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| LMArena Non-English | 1296 | 1467 |
| LMArena Chinese | 1299 | 1533 |
| LMArena French | 1303 | 1486 |
| LMArena German | 1301 | 1480 |
| LMArena Japanese | 1267 | 1498 |
| LMArena Korean | 1249 | 1460 |
| LMArena Russian | 1311 | 1473 |
| LMArena Spanish | 1298 | 1468 |
Instruction Following GPT-5.5 leads
Claude 3.7 Sonnet: 72.9 (#125), GPT-5.5: 77.5 (#18)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| LMArena Instruction Following | 1352 | 1479 |
| LiveBench Instruction Following | 81.3% | — |
| IFEval | 83.4% | — |
Long Context Claude 3.7 Sonnet leads
Claude 3.7 Sonnet: 50.3 (#10), GPT-5.5: 48.3 (#12)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| LMArena Longer Query | 1373 | 1484 |
| Fiction.LiveBench | 83.3% | — |
| CL-bench Life | — | 22.2% |
Writing & Preference GPT-5.5 leads
Claude 3.7 Sonnet: 54.4 (#150), GPT-5.5: 72.7 (#13)
| Benchmark | Claude 3.7 Sonnet | GPT-5.5 |
|---|---|---|
| LMArena Text | 1314 | 1472 |
| LMArena Creative Writing | 1332 | 1455 |
| EQ-Bench Creative Writing | 1412 | 1844 |
| LMArena Multi-Turn | 1339 | 1476 |
| Short-Story Creative Writing | 81.1% | — |
| WildBench | 81.4% | — |
| EQ-Bench 4 | — | 1315 |
| LiveBench Language | 59.9% | — |
Frequently asked questions
Is Claude 3.7 Sonnet better than GPT-5.5?
GPT-5.5 is the stronger model overall, scoring 63.4 to 39.5 on the Noometry Index.
Is Claude 3.7 Sonnet or GPT-5.5 better for coding?
GPT-5.5 scores higher on coding benchmarks: 58.2 versus 40.6 in the Noometry coding category.
How many benchmarks do Claude 3.7 Sonnet and GPT-5.5 share?
30 benchmarks have published results for both models. Claude 3.7 Sonnet has 58 scored results on Noometry and GPT-5.5 has 71.