# Claude Opus 4.1 vs Grok-3 mini

> Claude Opus 4.1 and Grok-3 mini score almost the same on the Noometry Index (40.8 vs 41.0), 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-3-mini
- Last updated: 2026-10-10
- Shared benchmarks: 24

## Summary

- They share 24 benchmarks with published results for both. Claude Opus 4.1 scores higher in 5 categories and Grok-3 mini in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok-3 mini leads 40.3 to 22.0.
- The biggest single-benchmark swing is Short-Story Creative Writing: 84.7% for Claude Opus 4.1 and 73.5% for Grok-3 mini.

## Snapshot

| | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 40.8 | 41.0 |
| Rank | 136 | 130 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.3 (#69)
- Grok-3 mini: 40.4 (#126)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| WeirdML | 45.9% | 42.6% |
| LMArena Coding | 1479 | 1380 |
| SWE-bench Verified | 73.3% | — |
| Aider Polyglot | — | 49.3% |
| LMArena WebDev | 1390 | — |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 34.8 (#38)
- Grok-3 mini: —

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

## Reasoning

- Claude Opus 4.1: 31.6 (#70)
- Grok-3 mini: 13.8 (#323)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1374 |
| Epoch Capabilities Index | 144.11 | 140.35 |
| ARC-AGI-2 | — | 0.4% |
| SimpleBench | 60% | — |
| Kagi LLM Benchmark | — | 61.3% |
| ARC-AGI-1 | — | 16.5% |
| 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: 22.0 (#267)
- Grok-3 mini: 40.3 (#78)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 77.8% |
| LMArena Math | 1430 | 1386 |
| FrontierMath (Feb 2025 set) | 7.2% | 5.9% |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| Omni-MATH | — | 31.8% |
| MATH Level 5 | — | 90.9% |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 41.9 (#93)
- Grok-3 mini: 46.3 (#75)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| GPQA Diamond | 77.3% | 76.3% |
| Confabulations | 17.1% | 10.8% |
| LMArena Expert | 1439 | 1395 |
| Humanity's Last Exam | 11.5% | — |
| MMLU-Pro | — | 79.9% |
| Vectara Hallucination Rate | 11.8% | — |
| GPQA (HELM) | — | 67.5% |

## Multimodal

- Claude Opus 4.1: 26.2 (#114)
- Grok-3 mini: —

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

## Multilingual

- Claude Opus 4.1: 52.1 (#90)
- Grok-3 mini: 48.3 (#141)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| LMArena Non-English | 1405 | 1352 |
| LMArena Chinese | 1427 | 1387 |
| LMArena French | 1432 | 1357 |
| LMArena German | 1412 | 1350 |
| LMArena Japanese | 1378 | 1343 |
| LMArena Korean | 1381 | 1336 |
| LMArena Russian | 1421 | 1352 |
| LMArena Spanish | 1448 | 1379 |

## Instruction Following

- Claude Opus 4.1: 75.8 (#53)
- Grok-3 mini: 78.7 (#8)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| LMArena Instruction Following | 1436 | 1356 |
| IFEval | — | 95.1% |

## Long Context

- Claude Opus 4.1: 44.5 (#60)
- Grok-3 mini: 41.0 (#142)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| LMArena Longer Query | 1455 | 1372 |
| Fiction.LiveBench | — | 66.7% |

## Writing & Preference

- Claude Opus 4.1: 62.6 (#70)
- Grok-3 mini: 52.7 (#163)

| Benchmark | Claude Opus 4.1 | Grok-3 mini |
|---|---|---|
| LMArena Text | 1419 | 1370 |
| LMArena Creative Writing | 1412 | 1342 |
| Short-Story Creative Writing | 84.7% | 73.5% |
| LMArena Multi-Turn | 1444 | 1355 |
| WildBench | — | 65.1% |

## FAQ

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

Claude Opus 4.1 and Grok-3 mini score almost the same on the Noometry Index (40.8 vs 41.0), so choose on price, context window or the category you care about most.

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

Claude Opus 4.1 scores higher on coding benchmarks: 44.3 versus 40.4 in the Noometry coding category.

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

24 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Grok-3 mini has 35.