# Claude Sonnet 4 vs o1

> Claude Sonnet 4 and o1 score almost the same on the Noometry Index (40.8 vs 40.9), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-sonnet-4-vs-o1
- Last updated: 2026-10-10
- Shared benchmarks: 38

## Summary

- They share 38 benchmarks with published results for both. Claude Sonnet 4 scores higher in 4 categories and o1 in 6 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where o1 leads 50.3 to 33.7.
- The biggest single-benchmark swing is GeoBench: 37% for Claude Sonnet 4 and 80% for o1.
- Claude Sonnet 4 is cheaper at $3 / $15 per million input/output tokens, against $15 / $60 for o1.

## Snapshot

| | Claude Sonnet 4 | o1 |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 40.8 | 40.9 |
| Rank | 145 | 143 |
| Context | 200K | 200K |
| Input $/M | $3 | $15 |
| Output $/M | $15 | $60 |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 4: 43.5 (#88)
- o1: 46.1 (#70)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| Aider Polyglot | 61.3% | 61.7% |
| WeirdML | 46.1% | 47.6% |
| LMArena Coding | 1414 | 1367 |
| SWE-bench Verified (bash only) | 64.9% | — |
| SciCode | 40% | — |
| GSO | 4.9% | — |
| LiveBench Coding | — | 69.7% |
| CadEval | — | 56% |
| ALE-Bench | 655.35 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |

## Agentic & Tool Use

- Claude Sonnet 4: 38.5 (#31)
- o1: 24.6 (#117)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| Cybench | 35% | 10% |
| METR Time Horizons | 62% | 51.1% |
| TheAgentCompany | 33.1% | — |
| DeepResearch Bench | 46.6% | — |
| OSWorld | 43.9% | — |

## Reasoning

- Claude Sonnet 4: 22.9 (#187)
- o1: 27.9 (#111)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| SimpleBench | 45.5% | 41.7% |
| ARC-AGI-1 | 40% | 30.7% |
| EnigmaEval | 3.1% | 5.7% |
| LMArena Hard Prompts | 1372 | 1371 |
| DTBench | 77.1% | 74.7% |
| LMCA | 29% | 22.3% |
| Epoch Capabilities Index | 141.69 | 141.91 |
| ARC-AGI-2 | 5.9% | — |
| Kagi LLM Benchmark | 73% | — |
| CritPt | 0.3% | — |
| Chess Puzzles | — | 15% |
| LiveBench Reasoning | — | 91.6% |
| LiveBench Data Analysis | — | 65.5% |
| ForecastBench | 60.2 | — |
| LiveBench | — | 75.7% |

## Math

- Claude Sonnet 4: 43.3 (#80)
- o1: 36.1 (#175)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 71.1% | 73.3% |
| LMArena Math | 1375 | 1388 |
| MATH Level 5 | 84.4% | 94.7% |
| FrontierMath (Feb 2025 set) | 4.1% | 9.3% |
| FrontierMath (Tiers 1-3) | — | 14.7% |
| Omni-MATH | 60.2% | — |
| LiveBench Math | — | 80.3% |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Claude Sonnet 4: 41.8 (#108)
- o1: 41.5 (#110)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| GPQA Diamond | 79.2% | 76.8% |
| Humanity's Last Exam | 7.8% | 8% |
| Confabulations | 13.2% | 11.7% |
| LMArena Expert | 1372 | 1361 |
| SimpleQA Verified | — | 41.1% |
| MMLU-Pro | 84.3% | — |
| Vectara Hallucination Rate | 10.3% | — |
| GPQA (HELM) | 70.6% | — |

## Multimodal

- Claude Sonnet 4: 26.2 (#121)
- o1: 34.2 (#93)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| LMArena Vision | 1191 | 1168 |
| GeoBench | 37% | 80% |
| VPCT | 34% | 37% |
| MindCube | 44.8% | — |
| SpatialViz-Bench | — | 41.4% |

## Multilingual

- Claude Sonnet 4: 46.7 (#156)
- o1: 48.6 (#142)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| LMArena Non-English | 1333 | 1358 |
| LMArena Chinese | 1350 | 1394 |
| LMArena French | 1363 | 1344 |
| LMArena German | 1331 | 1337 |
| LMArena Japanese | 1302 | 1346 |
| LMArena Korean | 1291 | 1396 |
| LMArena Russian | 1355 | 1356 |
| LMArena Spanish | 1357 | 1345 |

## Instruction Following

- Claude Sonnet 4: 71.7 (#145)
- o1: 74.8 (#86)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| LMArena Instruction Following | 1376 | 1367 |
| LiveBench Instruction Following | — | 81.5% |
| IFEval | 84% | — |

## Long Context

- Claude Sonnet 4: 33.7 (#259)
- o1: 50.3 (#9)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| Fiction.LiveBench | 46.9% | 83.3% |
| LMArena Longer Query | 1398 | 1378 |

## Writing & Preference

- Claude Sonnet 4: 57.1 (#132)
- o1: 55.6 (#144)

| Benchmark | Claude Sonnet 4 | o1 |
|---|---|---|
| LMArena Text | 1351 | 1366 |
| LMArena Creative Writing | 1345 | 1348 |
| Short-Story Creative Writing | 81.4% | 70.2% |
| LMArena Multi-Turn | 1376 | 1369 |
| EQ-Bench Creative Writing | 1483 | — |
| WildBench | 83.8% | — |
| LiveBench Language | — | 65.4% |

## FAQ

### Is Claude Sonnet 4 better than o1?

Claude Sonnet 4 and o1 score almost the same on the Noometry Index (40.8 vs 40.9), so choose on price, context window or the category you care about most.

### Which is cheaper, Claude Sonnet 4 or o1?

Claude Sonnet 4 is cheaper. It lists at $3 per million input tokens and $15 per million output tokens; o1 lists at $15 and $60.

### Is Claude Sonnet 4 or o1 better for coding?

o1 scores higher on coding benchmarks: 46.1 versus 43.5 in the Noometry coding category.

### Which has the bigger context window?

Both accept 200K tokens.

### How many benchmarks do Claude Sonnet 4 and o1 share?

38 benchmarks have published results for both models. Claude Sonnet 4 has 58 scored results on Noometry and o1 has 52.