Model comparison
Claude Sonnet 5 vs GPT-4.1
Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 35.7 on the Noometry Index.
Last verified . 31 shared benchmarks.
Summary
- They share 31 benchmarks with published results for both. Claude Sonnet 5 scores higher in 10 categories and GPT-4.1 in 0 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5 leads 66.1 to 21.4.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 65.6% for Claude Sonnet 5 and 6% for GPT-4.1.
- GPT-4.1 is cheaper at $2 / $8 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.
- GPT-4.1 accepts more context: 1.05M tokens versus 1M.
Side by side
| Claude Sonnet 5 | GPT-4.1 | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 54.5 | 35.7 |
| Released | 2026-06-29 | 2025-04-14 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 1.05M |
| Max output | 128K | 33K |
| Input $ / M tokens | $2 | $2 |
| Output $ / M tokens | $10 | $8 |
| Results tracked | 51 | 52 |
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Category by category
Coding Claude Sonnet 5 leads
Claude Sonnet 5: 55.5 (#20), GPT-4.1: 34.2 (#228)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| WeirdML | 68.8% | 39% |
| LMArena Coding | 1483 | 1391 |
| ALE-Bench | 1,463 | 558.1 |
| SWE-bench Verified | — | 48.5% |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.7% | — |
| SWE-bench Verified (bash only) | — | 39.6% |
| Aider Polyglot | — | 52.4% |
| CursorBench | 34.1% | — |
| LMArena WebDev | 1540 | — |
| SciCode | 53.6% | — |
| GSO | 37.3% | — |
| CadEval | — | 42% |
Agentic & Tool Use Claude Sonnet 5 leads
Claude Sonnet 5: 42.7 (#16), GPT-4.1: 34.4 (#40)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| APEX-Agents | 54.5% | — |
| Berkeley Function Calling Leaderboard | — | 54% |
| GBAEval | 65.3% | — |
| LMArena Search | 1194 | — |
| Vending-Bench 2 | 6,378 | — |
Reasoning Claude Sonnet 5 leads
Claude Sonnet 5: 48.2 (#37), GPT-4.1: 11.7 (#334)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| SimpleBench | 60.6% | 27% |
| Chess Puzzles | 35% | 6% |
| LMArena Hard Prompts | 1461 | 1384 |
| DTBench | 92.5% | 68.3% |
| LMCA | 50% | 25.6% |
| Epoch Capabilities Index | 156.34 | 136.79 |
| ForecastBench | 61.1 | 61.5 |
| ARC-AGI-2 | — | 0.4% |
| Kagi LLM Benchmark | — | 52.3% |
| NYT Connections (extended) | 75.1% | — |
| ARC-AGI-1 | — | 5.5% |
| CritPt | 16.9% | — |
| EnigmaEval | — | 2.2% |
| Mystery Game Puzzles | 35% | — |
| Surface Evolver Bench | 60% | — |
| Bench to the Future 3 | 0.14 | — |
Math Claude Sonnet 5 leads
Claude Sonnet 5: 66.1 (#21), GPT-4.1: 21.4 (#269)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 65.6% | 6% |
| OTIS Mock AIME 2024-2025 | 94.7% | 38.3% |
| LMArena Math | 1467 | 1369 |
| FrontierMath Tier 4 | 29.3% | — |
| ProofBench | 77% | — |
| Omni-MATH | — | 47.1% |
| MATH Level 5 | — | 83% |
| FrontierMath (Feb 2025 set) | — | 5.5% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Claude Sonnet 5 leads
Claude Sonnet 5: 55.7 (#42), GPT-4.1: 37.0 (#152)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| GPQA Diamond | 90.5% | 66.9% |
| SimpleQA Verified | 33.7% | 31.1% |
| LMArena Expert | 1491 | 1364 |
| Humanity's Last Exam | — | 5.4% |
| MMLU-Pro | — | 81.1% |
| Vectara Hallucination Rate | — | 5.6% |
| GPQA (HELM) | — | 65.9% |
Multimodal Claude Sonnet 5 leads
Claude Sonnet 5: 42.4 (#26), GPT-4.1: 37.5 (#66)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| LMArena Vision | 1275 | 1210 |
| GeoBench | — | 72% |
| Blueprint-Bench 2 | 24.9% | — |
| LMArena Document | 1466 | — |
Multilingual Claude Sonnet 5 leads
Claude Sonnet 5: 54.0 (#55), GPT-4.1: 49.6 (#128)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| LMArena Non-English | 1431 | 1370 |
| LMArena Chinese | 1475 | 1382 |
| LMArena French | 1457 | 1383 |
| LMArena German | 1448 | 1380 |
| LMArena Japanese | 1422 | 1320 |
| LMArena Korean | 1411 | 1339 |
| LMArena Russian | 1452 | 1377 |
| LMArena Spanish | 1436 | 1375 |
Instruction Following Claude Sonnet 5 leads
Claude Sonnet 5: 76.6 (#39), GPT-4.1: 71.5 (#148)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| LMArena Instruction Following | 1453 | 1367 |
| IFEval | — | 83.8% |
Long Context Claude Sonnet 5 leads
Claude Sonnet 5: 44.8 (#53), GPT-4.1: 40.0 (#158)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| LMArena Longer Query | 1464 | 1385 |
| Fiction.LiveBench | — | 63.9% |
Writing & Preference Claude Sonnet 5 leads
Claude Sonnet 5: 69.4 (#24), GPT-4.1: 57.8 (#120)
| Benchmark | Claude Sonnet 5 | GPT-4.1 |
|---|---|---|
| LMArena Text | 1443 | 1383 |
| LMArena Creative Writing | 1416 | 1363 |
| EQ-Bench Creative Writing | 1794 | 1420 |
| LMArena Multi-Turn | 1454 | 1398 |
| WildBench | — | 85.4% |
| EQ-Bench 4 | 1236 | — |
Frequently asked questions
Is Claude Sonnet 5 better than GPT-4.1?
Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 35.7 on the Noometry Index.
Which is cheaper, Claude Sonnet 5 or GPT-4.1?
GPT-4.1 is cheaper. It lists at $2 per million input tokens and $8 per million output tokens; Claude Sonnet 5 lists at $2 and $10.
Is Claude Sonnet 5 or GPT-4.1 better for coding?
Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 34.2 in the Noometry coding category.
Which has the bigger context window?
GPT-4.1 does, with 1.05M tokens against 1M.
How many benchmarks do Claude Sonnet 5 and GPT-4.1 share?
31 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and GPT-4.1 has 52.