# Claude Opus 4.1 vs Grok 3

> Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 39.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-grok-3
- Last updated: 2026-10-10
- Shared benchmarks: 27

## Summary

- They share 27 benchmarks with published results for both. Claude Opus 4.1 scores higher in 6 categories and Grok 3 in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.1 leads 32.2 to 13.7.
- The biggest single-benchmark swing is SimpleBench: 60% for Claude Opus 4.1 and 36.1% for Grok 3.

## Snapshot

| | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 41.0 | 39.9 |
| Rank | 142 | 157 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- Grok 3: 41.9 (#115)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| WeirdML | 45.9% | 37.2% |
| LMArena Coding | 1479 | 1432 |
| SWE-bench Verified | 73.3% | — |
| Aider Polyglot | — | 53.3% |
| LMArena WebDev | 1390 | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- Grok 3: 30.5 (#76)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| Terminal-Bench | 38% | — |
| GDPval | 43.6% | — |
| Cybench | 42% | — |
| DeepResearch Bench | 48.3% | — |
| BALROG | — | 29.5% |
| LMArena Search | 1148 | — |
| METR Time Horizons | 66.8% | — |

## Reasoning

- Claude Opus 4.1: 32.2 (#76)
- Grok 3: 13.7 (#333)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| SimpleBench | 60% | 36.1% |
| LMArena Hard Prompts | 1443 | 1434 |
| Epoch Capabilities Index | 144.12 | 138.33 |
| ARC-AGI-2 | — | 0% |
| Kagi LLM Benchmark | — | 61.3% |
| ARC-AGI-1 | — | 5.5% |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| Mystery Game Puzzles | 21% | — |
| DTBench | 80% | — |
| LMCA | 37.1% | — |
| ForecastBench | 62 | — |

## Math

- Claude Opus 4.1: 22.3 (#277)
- Grok 3: 38.0 (#145)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 55.6% |
| LMArena Math | 1431 | 1391 |
| FrontierMath (Feb 2025 set) | 7.2% | 3.8% |
| FrontierMath Tier 4 (v1) | 4.2% | 0% |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- Grok 3: 46.2 (#82)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| GPQA Diamond | 77.3% | 75.8% |
| Confabulations | 17.1% | 14.2% |
| Vectara Hallucination Rate | 11.8% | 5.8% |
| LMArena Expert | 1439 | 1421 |
| Humanity's Last Exam | 11.5% | — |
| MMLU-Pro | — | 78.8% |
| GPQA (HELM) | — | 65% |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- Grok 3: —

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- Grok 3: 52.3 (#87)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| LMArena Non-English | 1405 | 1410 |
| LMArena Chinese | 1427 | 1448 |
| LMArena French | 1431 | 1460 |
| LMArena German | 1413 | 1431 |
| LMArena Japanese | 1378 | 1387 |
| LMArena Korean | 1380 | 1373 |
| LMArena Russian | 1422 | 1416 |
| LMArena Spanish | 1448 | 1417 |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- Grok 3: 75.0 (#73)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1435 | 1409 |
| IFEval | — | 88.4% |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- Grok 3: 38.7 (#192)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1455 | 1439 |
| Fiction.LiveBench | — | 58.3% |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- Grok 3: 55.8 (#141)

| Benchmark | Claude Opus 4.1 | Grok 3 |
|---|---|---|
| LMArena Text | 1419 | 1426 |
| LMArena Creative Writing | 1412 | 1414 |
| Short-Story Creative Writing | 84.7% | 76.4% |
| LMArena Multi-Turn | 1444 | 1425 |
| EQ-Bench Creative Writing | — | 1186 |
| WildBench | — | 84.9% |

## FAQ

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

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 39.9 on the Noometry Index.

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

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 41.9 in the Noometry coding category.

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

27 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Grok 3 has 40.