# Claude Opus 4.1 vs Grok 4.1

> Claude Opus 4.1 and Grok 4.1 score almost the same on the Noometry Index (41.0 vs 41.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-grok-4-1
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Claude Opus 4.1 scores higher in 7 categories and Grok 4.1 in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4.1 leads 38.9 to 22.3.

## Snapshot

| | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 41.0 | 41.5 |
| Rank | 142 | 134 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- Grok 4.1: 33.7 (#253)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena WebDev | 1390 | 1214 |
| LMArena Coding | 1479 | 1445 |
| SWE-bench Verified | 73.3% | — |
| WeirdML | 45.9% | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- Grok 4.1: 34.1 (#49)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| Cybench | 42% | 39% |
| Terminal-Bench | 38% | — |
| GDPval | 43.6% | — |
| DeepResearch Bench | 48.3% | — |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |

## Reasoning

- Claude Opus 4.1: 32.2 (#76)
- Grok 4.1: 29.5 (#91)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1435 |
| SimpleBench | 60% | — |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| Epoch Capabilities Index | 144.12 | — |
| ForecastBench | 62 | — |

## Math

- Claude Opus 4.1: 22.3 (#277)
- Grok 4.1: 38.9 (#120)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Math | 1431 | 1422 |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 68.9% | — |
| FrontierMath (Feb 2025 set) | 7.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- Grok 4.1: 39.5 (#133)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Expert | 1439 | 1417 |
| GPQA Diamond | 77.3% | — |
| Humanity's Last Exam | 11.5% | — |
| Confabulations | 17.1% | — |
| Vectara Hallucination Rate | 11.8% | — |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- Grok 4.1: —

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- Grok 4.1: 53.4 (#68)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1405 | 1425 |
| LMArena Chinese | 1427 | 1465 |
| LMArena French | 1431 | 1448 |
| LMArena German | 1413 | 1446 |
| LMArena Japanese | 1378 | 1397 |
| LMArena Korean | 1380 | 1407 |
| LMArena Russian | 1422 | 1434 |
| LMArena Spanish | 1448 | 1438 |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- Grok 4.1: 73.8 (#111)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1435 | 1400 |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- Grok 4.1: 43.2 (#100)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1455 | 1416 |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- Grok 4.1: 62.4 (#75)

| Benchmark | Claude Opus 4.1 | Grok 4.1 |
|---|---|---|
| LMArena Text | 1419 | 1437 |
| LMArena Creative Writing | 1412 | 1411 |
| LMArena Multi-Turn | 1444 | 1437 |
| Short-Story Creative Writing | 84.7% | — |

## FAQ

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

Claude Opus 4.1 and Grok 4.1 score almost the same on the Noometry Index (41.0 vs 41.5), so choose on price, context window or the category you care about most.

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

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 33.7 in the Noometry coding category.

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

19 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Grok 4.1 has 19.