# Claude Sonnet 4 vs Grok 4

> Grok 4 is the stronger model overall, scoring 48.1 to 40.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-sonnet-4-vs-grok-4
- Last updated: 2026-10-11
- Shared benchmarks: 42

## Summary

- They share 42 benchmarks with published results for both. Claude Sonnet 4 scores higher in 1 category and Grok 4 in 9 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 33.7.
- The biggest single-benchmark swing is Fiction.LiveBench: 46.9% for Claude Sonnet 4 and 94.4% for Grok 4.

## Snapshot

| | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 40.8 | 48.1 |
| Rank | 145 | 56 |
| Context | 200K | — |
| Input $/M | $3 | — |
| Output $/M | $15 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Sonnet 4: 43.5 (#88)
- Grok 4: 50.3 (#46)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| Aider Polyglot | 61.3% | 79.6% |
| WeirdML | 46.1% | 45.7% |
| LMArena Coding | 1414 | 1408 |
| SWE-bench Verified (bash only) | 64.9% | — |
| SciCode | 40% | — |
| GSO | 4.9% | — |
| ALE-Bench | 655.35 | — |

## Agentic & Tool Use

- Claude Sonnet 4: 38.5 (#31)
- Grok 4: 32.3 (#68)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| Cybench | 35% | 43% |
| DeepResearch Bench | 46.6% | 47.3% |
| METR Time Horizons | 62% | 66.6% |
| Terminal-Bench | — | 27.2% |
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 21.1% |
| TheAgentCompany | 33.1% | — |
| OSWorld | 43.9% | — |
| BALROG | — | 43.6% |
| LMArena Search | — | 1142 |

## Reasoning

- Claude Sonnet 4: 22.9 (#187)
- Grok 4: 36.7 (#65)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| ARC-AGI-2 | 5.9% | 16% |
| SimpleBench | 45.5% | 60.5% |
| Kagi LLM Benchmark | 73% | 73.6% |
| ARC-AGI-1 | 40% | 66.7% |
| LMArena Hard Prompts | 1372 | 1409 |
| Epoch Capabilities Index | 141.69 | 146.44 |
| ForecastBench | 60.2 | 60.9 |
| CritPt | 0.3% | — |
| Chess Puzzles | — | 28% |
| EnigmaEval | 3.1% | — |
| DTBench | 77.1% | — |
| LMCA | 29% | — |

## Math

- Claude Sonnet 4: 43.3 (#80)
- Grok 4: 48.4 (#64)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 71.1% | 84% |
| Omni-MATH | 60.2% | 60.3% |
| LMArena Math | 1375 | 1422 |
| FrontierMath (Feb 2025 set) | 4.1% | 19.7% |
| FrontierMath Tier 4 (v1) | 0% | 2.1% |
| MATH Level 5 | 84.4% | — |

## Knowledge

- Claude Sonnet 4: 41.8 (#108)
- Grok 4: 53.8 (#55)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| GPQA Diamond | 79.2% | 87% |
| MMLU-Pro | 84.3% | 85.1% |
| Confabulations | 13.2% | 12.4% |
| GPQA (HELM) | 70.6% | 72.7% |
| LMArena Expert | 1372 | 1415 |
| Humanity's Last Exam | 7.8% | — |
| Vectara Hallucination Rate | 10.3% | — |

## Multimodal

- Claude Sonnet 4: 26.2 (#121)
- Grok 4: 33.7 (#94)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| LMArena Vision | 1191 | 1210 |
| GeoBench | 37% | 45% |
| VPCT | 34% | — |
| MindCube | 44.8% | — |

## Multilingual

- Claude Sonnet 4: 46.7 (#156)
- Grok 4: 51.8 (#103)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| LMArena Non-English | 1333 | 1403 |
| LMArena Chinese | 1350 | 1427 |
| LMArena French | 1363 | 1418 |
| LMArena German | 1331 | 1429 |
| LMArena Japanese | 1302 | 1394 |
| LMArena Korean | 1291 | 1377 |
| LMArena Russian | 1355 | 1410 |
| LMArena Spanish | 1357 | 1420 |

## Instruction Following

- Claude Sonnet 4: 71.7 (#145)
- Grok 4: 79.2 (#5)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| IFEval | 84% | 94.9% |
| LMArena Instruction Following | 1376 | 1387 |

## Long Context

- Claude Sonnet 4: 33.7 (#259)
- Grok 4: 63.1 (#4)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| Fiction.LiveBench | 46.9% | 94.4% |
| LMArena Longer Query | 1398 | 1409 |

## Writing & Preference

- Claude Sonnet 4: 57.1 (#132)
- Grok 4: 58.5 (#116)

| Benchmark | Claude Sonnet 4 | Grok 4 |
|---|---|---|
| LMArena Text | 1351 | 1411 |
| LMArena Creative Writing | 1345 | 1397 |
| Short-Story Creative Writing | 81.4% | 76.9% |
| WildBench | 83.8% | 79.7% |
| LMArena Multi-Turn | 1376 | 1416 |
| EQ-Bench Creative Writing | 1483 | — |

## FAQ

### Is Claude Sonnet 4 better than Grok 4?

Grok 4 is the stronger model overall, scoring 48.1 to 40.8 on the Noometry Index.

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

Grok 4 scores higher on coding benchmarks: 50.3 versus 43.5 in the Noometry coding category.

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

42 benchmarks have published results for both models. Claude Sonnet 4 has 58 scored results on Noometry and Grok 4 has 48.