Model comparison
Claude 3.5 Sonnet vs Claude Sonnet 5
Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 34.4 on the Noometry Index.
Last verified . 27 shared benchmarks.
Summary
- They share 27 benchmarks with published results for both. Claude 3.5 Sonnet scores higher in 0 categories and Claude Sonnet 5 in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5 leads 66.1 to 18.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 8.5% for Claude 3.5 Sonnet and 94.7% for Claude Sonnet 5.
Side by side
| Claude 3.5 Sonnet | Claude Sonnet 5 | |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 34.4 | 54.5 |
| Released | 2024-06-20 | 2026-06-29 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 128K |
| Input $ / M tokens | — | $2 |
| Output $ / M tokens | — | $10 |
| Results tracked | 60 | 51 |
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Category by category
Coding Claude Sonnet 5 leads
Claude 3.5 Sonnet: 39.5 (#145), Claude Sonnet 5: 55.5 (#20)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| GSO | 4.6% | 37.3% |
| WeirdML | 40% | 68.8% |
| LMArena Coding | 1343 | 1483 |
| DeepSWE | — | 53.8% |
| FrontierCode | — | 42.7% |
| Aider Polyglot | 51.6% | — |
| CursorBench | — | 34.1% |
| LMArena WebDev | — | 1540 |
| SciCode | — | 53.6% |
| BigCodeBench Instruct | 46.8% | — |
| LiveBench Coding | 67.1% | — |
| BigCodeBench Complete | 58.6% | — |
| CadEval | 48% | — |
| ALE-Bench | — | 1,463 |
| HumanEval+ | 81.7% | — |
| MBPP+ | 74.3% | — |
Agentic & Tool Use Claude Sonnet 5 leads
Claude 3.5 Sonnet: 32.1 (#61), Claude Sonnet 5: 42.7 (#16)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| APEX-Agents | — | 54.5% |
| TheAgentCompany | 24% | — |
| Cybench | 17.5% | — |
| BALROG | 32.6% | — |
| GBAEval | — | 65.3% |
| LMArena Search | — | 1194 |
| METR Time Horizons | 45.2% | — |
| Vending-Bench 2 | — | 6,378 |
Reasoning Claude Sonnet 5 leads
Claude 3.5 Sonnet: 22.5 (#176), Claude Sonnet 5: 48.2 (#37)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| SimpleBench | 41.4% | 60.6% |
| LMArena Hard Prompts | 1305 | 1461 |
| DTBench | 67.8% | 92.5% |
| Epoch Capabilities Index | 133.55 | 156.34 |
| ForecastBench | 60.7 | 61.1 |
| NYT Connections (extended) | — | 75.1% |
| CritPt | — | 16.9% |
| Chess Puzzles | — | 35% |
| EnigmaEval | 0.9% | — |
| LiveBench Reasoning | 56.7% | — |
| Mystery Game Puzzles | — | 35% |
| LiveBench Data Analysis | 55% | — |
| LMCA | — | 50% |
| Surface Evolver Bench | — | 60% |
| Bench to the Future 3 | — | 0.14 |
| LiveBench | 59% | — |
Math Claude Sonnet 5 leads
Claude 3.5 Sonnet: 18.0 (#282), Claude Sonnet 5: 66.1 (#21)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 8.5% | 94.7% |
| LMArena Math | 1306 | 1467 |
| FrontierMath (Tiers 1-3) | — | 65.6% |
| FrontierMath Tier 4 | — | 29.3% |
| ProofBench | — | 77% |
| Omni-MATH | 27.6% | — |
| LiveBench Math | 52.3% | — |
| MATH Level 5 | 56.9% | — |
| FrontierMath (Feb 2025 set) | 2.1% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Claude Sonnet 5 leads
Claude 3.5 Sonnet: 28.5 (#236), Claude Sonnet 5: 55.7 (#42)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| GPQA Diamond | 55.3% | 90.5% |
| LMArena Expert | 1264 | 1491 |
| Humanity's Last Exam | 4.1% | — |
| SimpleQA Verified | — | 33.7% |
| MMLU-Pro | 77.7% | — |
| Confabulations | 19.9% | — |
| GPQA (HELM) | 56.5% | — |
| MMLU | 87.3% | — |
Multimodal Claude Sonnet 5 leads
Claude 3.5 Sonnet: 26.0 (#115), Claude Sonnet 5: 42.4 (#26)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| LMArena Vision | 1125 | 1275 |
| Video-MME | 60% | — |
| GeoBench | 62% | — |
| VPCT | 33% | — |
| Blueprint-Bench 2 | — | 24.9% |
| LMArena Document | — | 1466 |
Multilingual Claude Sonnet 5 leads
Claude 3.5 Sonnet: 43.4 (#180), Claude Sonnet 5: 54.0 (#55)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| LMArena Non-English | 1283 | 1431 |
| LMArena Chinese | 1271 | 1475 |
| LMArena French | 1304 | 1457 |
| LMArena German | 1297 | 1448 |
| LMArena Japanese | 1234 | 1422 |
| LMArena Korean | 1200 | 1411 |
| LMArena Russian | 1305 | 1452 |
| LMArena Spanish | 1289 | 1436 |
Instruction Following Claude Sonnet 5 leads
Claude 3.5 Sonnet: 69.0 (#177), Claude Sonnet 5: 76.6 (#39)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| LMArena Instruction Following | 1297 | 1453 |
| LiveBench Instruction Following | 69.3% | — |
| IFEval | 85.5% | — |
Long Context Claude Sonnet 5 leads
Claude 3.5 Sonnet: 39.9 (#162), Claude Sonnet 5: 44.8 (#53)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| LMArena Longer Query | 1311 | 1464 |
Writing & Preference Claude Sonnet 5 leads
Claude 3.5 Sonnet: 53.0 (#159), Claude Sonnet 5: 69.4 (#24)
| Benchmark | Claude 3.5 Sonnet | Claude Sonnet 5 |
|---|---|---|
| LMArena Text | 1298 | 1443 |
| LMArena Creative Writing | 1292 | 1416 |
| EQ-Bench Creative Writing | 1451 | 1794 |
| LMArena Multi-Turn | 1326 | 1454 |
| Short-Story Creative Writing | 80.3% | — |
| WildBench | 79.2% | — |
| EQ-Bench 4 | — | 1236 |
| LiveBench Language | 53.8% | — |
Frequently asked questions
Is Claude 3.5 Sonnet better than Claude Sonnet 5?
Claude Sonnet 5 is the stronger model overall, scoring 54.5 to 34.4 on the Noometry Index.
Is Claude 3.5 Sonnet or Claude Sonnet 5 better for coding?
Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 39.5 in the Noometry coding category.
How many benchmarks do Claude 3.5 Sonnet and Claude Sonnet 5 share?
27 benchmarks have published results for both models. Claude 3.5 Sonnet has 60 scored results on Noometry and Claude Sonnet 5 has 51.