# Claude 3 Opus vs Grok 4.1

> Grok 4.1 is the stronger model overall, scoring 40.8 to 29.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-grok-4-1
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Grok 4.1 in 9 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4.1 leads 36.2 to 13.9.
- The biggest single-benchmark swing is Cybench: 10% for Claude 3 Opus and 39% for Grok 4.1.

## Snapshot

| | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 29.3 | 40.8 |
| Rank | 300 | 135 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Opus: 32.4 (#261)
- Grok 4.1: 33.4 (#246)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Coding | 1264 | 1445 |
| LMArena WebDev | — | 1214 |
| WeirdML | 19.2% | — |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.3 (#110)
- Grok 4.1: 33.8 (#47)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| Cybench | 10% | 39% |
| METR Time Horizons | 29.5% | — |

## Reasoning

- Claude 3 Opus: 14.2 (#318)
- Grok 4.1: 28.3 (#91)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1436 |
| SimpleBench | 23.5% | — |
| Chess Puzzles | 5% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 40.6% | — |
| DTBench | 61.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | 17% | — |
| Epoch Capabilities Index | 126.91 | — |
| ForecastBench | 58.4 | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 13.9 (#293)
- Grok 4.1: 36.2 (#124)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Math | 1273 | 1422 |
| OTIS Mock AIME 2024-2025 | 4.7% | — |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |

## Knowledge

- Claude 3 Opus: 24.5 (#262)
- Grok 4.1: 38.9 (#129)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Expert | 1223 | 1417 |
| GPQA Diamond | 47.2% | — |
| SimpleQA Verified | 12.6% | — |
| Confabulations | 22.7% | — |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 26.6 (#112)
- Grok 4.1: —

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Vision | 1023 | — |

## Multilingual

- Claude 3 Opus: 41.6 (#202)
- Grok 4.1: 53.6 (#64)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Non-English | 1258 | 1425 |
| LMArena Chinese | 1248 | 1464 |
| LMArena French | 1274 | 1448 |
| LMArena German | 1258 | 1447 |
| LMArena Japanese | 1204 | 1396 |
| LMArena Korean | 1187 | 1407 |
| LMArena Russian | 1280 | 1434 |
| LMArena Spanish | 1246 | 1438 |

## Instruction Following

- Claude 3 Opus: 64.3 (#223)
- Grok 4.1: 74.0 (#106)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Instruction Following | 1248 | 1400 |
| LiveBench Instruction Following | 63.9% | — |

## Long Context

- Claude 3 Opus: 38.2 (#197)
- Grok 4.1: 43.2 (#96)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Longer Query | 1259 | 1416 |

## Writing & Preference

- Claude 3 Opus: 47.4 (#208)
- Grok 4.1: 62.6 (#71)

| Benchmark | Claude 3 Opus | Grok 4.1 |
|---|---|---|
| LMArena Text | 1262 | 1437 |
| LMArena Creative Writing | 1235 | 1411 |
| LMArena Multi-Turn | 1275 | 1438 |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Grok 4.1?

Grok 4.1 is the stronger model overall, scoring 40.8 to 29.3 on the Noometry Index.

### Is Claude 3 Opus or Grok 4.1 better for coding?

They score almost the same on coding (32.4 vs 33.4); test both on your own repository before choosing.

### How many benchmarks do Claude 3 Opus and Grok 4.1 share?

18 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Grok 4.1 has 19.