Model comparison
Claude 3 Sonnet vs Claude Sonnet 4
Claude Sonnet 4 is the stronger model overall, scoring 40.8 to 29.0 on the Noometry Index.
Last verified . 24 shared benchmarks.
Summary
- They share 24 benchmarks with published results for both. Claude 3 Sonnet scores higher in 1 category and Claude Sonnet 4 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 4 leads 43.3 to 10.7.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 3 Sonnet and 71.1% for Claude Sonnet 4.
Side by side
| Claude 3 Sonnet | Claude Sonnet 4 | |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 29.0 | 40.8 |
| Released | 2024-02-29 | 2025-05-22 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 64K |
| Input $ / M tokens | — | $3 |
| Output $ / M tokens | — | $15 |
| Results tracked | 30 | 58 |
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Category by category
Coding Claude Sonnet 4 leads
Claude 3 Sonnet: 29.6 (#302), Claude Sonnet 4: 43.5 (#88)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| WeirdML | 10.2% | 46.1% |
| LMArena Coding | 1223 | 1414 |
| SWE-bench Verified (bash only) | — | 64.9% |
| Aider Polyglot | — | 61.3% |
| SciCode | — | 40% |
| GSO | — | 4.9% |
| BigCodeBench Instruct | 42.7% | — |
| BigCodeBench Complete | 53.8% | — |
| ALE-Bench | — | 655.35 |
| HumanEval+ | 64% | — |
| MBPP+ | 69.3% | — |
Agentic & Tool Use Not comparable
Claude 3 Sonnet: —, Claude Sonnet 4: 38.5 (#31)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| TheAgentCompany | — | 33.1% |
| Cybench | — | 35% |
| DeepResearch Bench | — | 46.6% |
| OSWorld | — | 43.9% |
| METR Time Horizons | — | 62% |
Reasoning Claude Sonnet 4 leads
Claude 3 Sonnet: 20.5 (#237), Claude Sonnet 4: 22.9 (#187)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| LMArena Hard Prompts | 1197 | 1372 |
| DTBench | 53.6% | 77.1% |
| Epoch Capabilities Index | 120.7 | 141.69 |
| ARC-AGI-2 | — | 5.9% |
| SimpleBench | — | 45.5% |
| Kagi LLM Benchmark | — | 73% |
| ARC-AGI-1 | — | 40% |
| CritPt | — | 0.3% |
| EnigmaEval | — | 3.1% |
| LMCA | — | 29% |
| ForecastBench | — | 60.2 |
| WinoGrande | 75.1% | — |
Math Claude Sonnet 4 leads
Claude 3 Sonnet: 10.7 (#310), Claude Sonnet 4: 43.3 (#80)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 2.5% | 71.1% |
| LMArena Math | 1213 | 1375 |
| MATH Level 5 | 18.2% | 84.4% |
| Omni-MATH | — | 60.2% |
| FrontierMath (Feb 2025 set) | — | 4.1% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Claude Sonnet 4 leads
Claude 3 Sonnet: 21.1 (#276), Claude Sonnet 4: 41.8 (#108)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| GPQA Diamond | 40.6% | 79.2% |
| LMArena Expert | 1173 | 1372 |
| Humanity's Last Exam | — | 7.8% |
| MMLU-Pro | — | 84.3% |
| Confabulations | — | 13.2% |
| Vectara Hallucination Rate | — | 10.3% |
| GPQA (HELM) | — | 70.6% |
| MMLU | 75.9% | — |
Multimodal Too close to call
Claude 3 Sonnet: 25.2 (#125), Claude Sonnet 4: 26.2 (#121)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| LMArena Vision | 984 | 1191 |
| GeoBench | — | 37% |
| VPCT | — | 34% |
| MindCube | — | 44.8% |
Multilingual Claude Sonnet 4 leads
Claude 3 Sonnet: 37.8 (#234), Claude Sonnet 4: 46.7 (#156)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| LMArena Non-English | 1205 | 1333 |
| LMArena Chinese | 1189 | 1350 |
| LMArena French | 1229 | 1363 |
| LMArena German | 1204 | 1331 |
| LMArena Japanese | 1131 | 1302 |
| LMArena Korean | 1128 | 1291 |
| LMArena Russian | 1227 | 1355 |
| LMArena Spanish | 1204 | 1357 |
Instruction Following Claude Sonnet 4 leads
Claude 3 Sonnet: 62.8 (#235), Claude Sonnet 4: 71.7 (#145)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| LMArena Instruction Following | 1199 | 1376 |
| IFEval | — | 84% |
Long Context Claude 3 Sonnet leads
Claude 3 Sonnet: 36.7 (#228), Claude Sonnet 4: 33.7 (#259)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| LMArena Longer Query | 1211 | 1398 |
| Fiction.LiveBench | — | 46.9% |
Writing & Preference Claude Sonnet 4 leads
Claude 3 Sonnet: 42.1 (#238), Claude Sonnet 4: 57.1 (#132)
| Benchmark | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| LMArena Text | 1218 | 1351 |
| LMArena Creative Writing | 1186 | 1345 |
| LMArena Multi-Turn | 1227 | 1376 |
| Short-Story Creative Writing | — | 81.4% |
| EQ-Bench Creative Writing | — | 1483 |
| WildBench | — | 83.8% |
Frequently asked questions
Is Claude 3 Sonnet better than Claude Sonnet 4?
Claude Sonnet 4 is the stronger model overall, scoring 40.8 to 29.0 on the Noometry Index.
Is Claude 3 Sonnet or Claude Sonnet 4 better for coding?
Claude Sonnet 4 scores higher on coding benchmarks: 43.5 versus 29.6 in the Noometry coding category.
How many benchmarks do Claude 3 Sonnet and Claude Sonnet 4 share?
24 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and Claude Sonnet 4 has 58.