# Claude 3 Opus vs Claude Sonnet 4

> Claude Sonnet 4 is the stronger model overall, scoring 40.6 to 29.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-claude-sonnet-4
- Last updated: 2026-10-10
- Shared benchmarks: 31

## Summary

- They share 31 benchmarks with published results for both. Claude 3 Opus scores higher in 2 categories and Claude Sonnet 4 in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 4 leads 41.5 to 13.9.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 71.1% for Claude Sonnet 4.

## Snapshot

| | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Noometry Index | 29.3 | 40.6 |
| Rank | 300 | 139 |
| Context | — | 200K |
| Input $/M | — | $3 |
| Output $/M | — | $15 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Opus: 32.4 (#261)
- Claude Sonnet 4: 44.0 (#70)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| WeirdML | 19.2% | 46.1% |
| LMArena Coding | 1264 | 1414 |
| SWE-bench Verified (bash only) | — | 64.9% |
| Aider Polyglot | — | 61.3% |
| SciCode | — | 40% |
| GSO | — | 4.9% |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| ALE-Bench | — | 655.35 |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.3 (#110)
- Claude Sonnet 4: 38.3 (#29)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| Cybench | 10% | 35% |
| METR Time Horizons | 29.5% | 62% |
| TheAgentCompany | — | 33.1% |
| DeepResearch Bench | — | 46.6% |
| OSWorld | — | 43.9% |

## Reasoning

- Claude 3 Opus: 14.2 (#318)
- Claude Sonnet 4: 23.0 (#169)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| SimpleBench | 23.5% | 45.5% |
| EnigmaEval | 0.8% | 3.1% |
| LMArena Hard Prompts | 1246 | 1372 |
| DTBench | 61.6% | 77.1% |
| LMCA | 17% | 29% |
| Epoch Capabilities Index | 126.91 | 141.69 |
| ForecastBench | 58.4 | 60.2 |
| ARC-AGI-2 | — | 5.9% |
| Kagi LLM Benchmark | — | 73% |
| ARC-AGI-1 | — | 40% |
| CritPt | — | 0.3% |
| Chess Puzzles | 5% | — |
| LiveBench Reasoning | 40.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 13.9 (#293)
- Claude Sonnet 4: 41.5 (#71)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 71.1% |
| LMArena Math | 1273 | 1375 |
| MATH Level 5 | 37.5% | 84.4% |
| Omni-MATH | — | 60.2% |
| LiveBench Math | 43.6% | — |
| FrontierMath (Feb 2025 set) | — | 4.1% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Claude 3 Opus: 24.5 (#262)
- Claude Sonnet 4: 41.6 (#99)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| GPQA Diamond | 47.2% | 79.2% |
| Confabulations | 22.7% | 13.2% |
| LMArena Expert | 1223 | 1371 |
| Humanity's Last Exam | — | 7.8% |
| SimpleQA Verified | 12.6% | — |
| MMLU-Pro | — | 84.3% |
| Vectara Hallucination Rate | — | 10.3% |
| GPQA (HELM) | — | 70.6% |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 26.6 (#112)
- Claude Sonnet 4: 25.6 (#116)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| LMArena Vision | 1023 | 1191 |
| GeoBench | — | 37% |
| VPCT | — | 34% |
| MindCube | — | 44.8% |

## Multilingual

- Claude 3 Opus: 41.6 (#202)
- Claude Sonnet 4: 46.9 (#151)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| LMArena Non-English | 1258 | 1333 |
| LMArena Chinese | 1248 | 1351 |
| LMArena French | 1274 | 1364 |
| LMArena German | 1258 | 1331 |
| LMArena Japanese | 1204 | 1301 |
| LMArena Korean | 1187 | 1293 |
| LMArena Russian | 1280 | 1355 |
| LMArena Spanish | 1246 | 1356 |

## Instruction Following

- Claude 3 Opus: 64.3 (#223)
- Claude Sonnet 4: 71.8 (#141)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| LMArena Instruction Following | 1248 | 1375 |
| LiveBench Instruction Following | 63.9% | — |
| IFEval | — | 84% |

## Long Context

- Claude 3 Opus: 38.2 (#197)
- Claude Sonnet 4: 33.6 (#254)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| LMArena Longer Query | 1259 | 1398 |
| Fiction.LiveBench | — | 46.9% |

## Writing & Preference

- Claude 3 Opus: 47.4 (#208)
- Claude Sonnet 4: 57.3 (#127)

| Benchmark | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| LMArena Text | 1262 | 1351 |
| LMArena Creative Writing | 1235 | 1345 |
| LMArena Multi-Turn | 1275 | 1376 |
| Short-Story Creative Writing | — | 81.4% |
| EQ-Bench Creative Writing | — | 1483 |
| WildBench | — | 83.8% |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Claude Sonnet 4?

Claude Sonnet 4 is the stronger model overall, scoring 40.6 to 29.3 on the Noometry Index.

### Is Claude 3 Opus or Claude Sonnet 4 better for coding?

Claude Sonnet 4 scores higher on coding benchmarks: 44.0 versus 32.4 in the Noometry coding category.

### How many benchmarks do Claude 3 Opus and Claude Sonnet 4 share?

31 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Claude Sonnet 4 has 58.