# Claude Opus 4.1 vs Grok 4

> Grok 4 is the stronger model overall, scoring 47.8 to 40.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-grok-4
- Last updated: 2026-10-10
- Shared benchmarks: 34

## Summary

- They share 34 benchmarks with published results for both. Claude Opus 4.1 scores higher in 3 categories and Grok 4 in 7 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4 leads 46.5 to 22.0.
- The biggest single-benchmark swing is GDPval: 43.6% for Claude Opus 4.1 and 21.1% for Grok 4.

## Snapshot

| | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 40.8 | 47.8 |
| Rank | 136 | 49 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.3 (#69)
- Grok 4: 49.9 (#44)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| WeirdML | 45.9% | 45.7% |
| LMArena Coding | 1479 | 1408 |
| SWE-bench Verified | 73.3% | — |
| Aider Polyglot | — | 79.6% |
| LMArena WebDev | 1390 | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 34.8 (#38)
- Grok 4: 32.1 (#62)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| Terminal-Bench | 38% | 27.2% |
| GDPval | 43.6% | 21.1% |
| Cybench | 42% | 43% |
| DeepResearch Bench | 48.3% | 47.3% |
| LMArena Search | 1148 | 1142 |
| METR Time Horizons | 66.8% | 66.6% |
| Berkeley Function Calling Leaderboard | — | 63% |
| BALROG | — | 43.6% |

## Reasoning

- Claude Opus 4.1: 31.6 (#70)
- Grok 4: 36.9 (#59)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| SimpleBench | 60% | 60.5% |
| Chess Puzzles | 7% | 28% |
| LMArena Hard Prompts | 1443 | 1409 |
| Epoch Capabilities Index | 144.11 | 146.46 |
| ForecastBench | 62 | 60.9 |
| ARC-AGI-2 | — | 16% |
| Kagi LLM Benchmark | — | 73.6% |
| ARC-AGI-1 | — | 66.7% |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |

## Math

- Claude Opus 4.1: 22.0 (#267)
- Grok 4: 46.5 (#58)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 84% |
| LMArena Math | 1430 | 1422 |
| FrontierMath (Feb 2025 set) | 7.2% | 19.7% |
| FrontierMath Tier 4 (v1) | 4.2% | 2.1% |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| Omni-MATH | — | 60.3% |

## Knowledge

- Claude Opus 4.1: 41.9 (#93)
- Grok 4: 53.7 (#50)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| GPQA Diamond | 77.3% | 87% |
| Confabulations | 17.1% | 12.4% |
| LMArena Expert | 1439 | 1417 |
| Humanity's Last Exam | 11.5% | — |
| MMLU-Pro | — | 85.1% |
| Vectara Hallucination Rate | 11.8% | — |
| GPQA (HELM) | — | 72.7% |

## Multimodal

- Claude Opus 4.1: 26.2 (#114)
- Grok 4: 33.1 (#89)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| LMArena Vision | — | 1211 |
| GeoBench | — | 45% |
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.1 (#90)
- Grok 4: 52.0 (#98)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| LMArena Non-English | 1405 | 1403 |
| LMArena Chinese | 1427 | 1428 |
| LMArena French | 1432 | 1418 |
| LMArena German | 1412 | 1429 |
| LMArena Japanese | 1378 | 1396 |
| LMArena Korean | 1381 | 1376 |
| LMArena Russian | 1421 | 1409 |
| LMArena Spanish | 1448 | 1419 |

## Instruction Following

- Claude Opus 4.1: 75.8 (#53)
- Grok 4: 79.4 (#4)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| LMArena Instruction Following | 1436 | 1387 |
| IFEval | — | 94.9% |

## Long Context

- Claude Opus 4.1: 44.5 (#60)
- Grok 4: 63.1 (#4)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| LMArena Longer Query | 1455 | 1409 |
| Fiction.LiveBench | — | 94.4% |

## Writing & Preference

- Claude Opus 4.1: 62.6 (#70)
- Grok 4: 58.7 (#111)

| Benchmark | Claude Opus 4.1 | Grok 4 |
|---|---|---|
| LMArena Text | 1419 | 1412 |
| LMArena Creative Writing | 1412 | 1397 |
| Short-Story Creative Writing | 84.7% | 76.9% |
| LMArena Multi-Turn | 1444 | 1416 |
| WildBench | — | 79.7% |

## FAQ

### Is Claude Opus 4.1 better than Grok 4?

Grok 4 is the stronger model overall, scoring 47.8 to 40.8 on the Noometry Index.

### Is Claude Opus 4.1 or Grok 4 better for coding?

Grok 4 scores higher on coding benchmarks: 49.9 versus 44.3 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.1 and Grok 4 share?

34 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Grok 4 has 48.