# Claude Opus 4.1 vs Grok-2 (Dec 2024)

> Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 33.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-opus-4-1-vs-grok-2
- Last updated: 2026-10-10
- Shared benchmarks: 26

## Summary

- They share 26 benchmarks with published results for both. Claude Opus 4.1 scores higher in 8 categories and Grok-2 (Dec 2024) in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.1 leads 32.2 to 16.9.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.9% for Claude Opus 4.1 and 11.5% for Grok-2 (Dec 2024).

## Snapshot

| | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 41.0 | 33.7 |
| Rank | 142 | 239 |
| Context | 200K | — |
| Input $/M | $15 | — |
| Output $/M | $75 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Opus 4.1: 44.4 (#73)
- Grok-2 (Dec 2024): 33.3 (#258)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| WeirdML | 45.9% | 22.2% |
| LMArena Coding | 1479 | 1287 |
| SWE-bench Verified | 73.3% | — |
| LMArena WebDev | 1390 | — |
| LiveBench Coding | — | 46.4% |
| ALE-Bench | 674.77 | — |
| AlgoTune | 1.34 | — |

## Agentic & Tool Use

- Claude Opus 4.1: 35.0 (#41)
- Grok-2 (Dec 2024): —

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| 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: 32.2 (#76)
- Grok-2 (Dec 2024): 16.9 (#299)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| SimpleBench | 60% | 22.7% |
| LMArena Hard Prompts | 1443 | 1272 |
| DTBench | 80% | 65.2% |
| Epoch Capabilities Index | 144.12 | 130.48 |
| Chess Puzzles | 7% | — |
| EnigmaEval | 7.2% | — |
| EBR-Bench | 7.9% | — |
| LiveBench Reasoning | — | 54.8% |
| Mystery Game Puzzles | 21% | — |
| LiveBench Data Analysis | — | 54.5% |
| LMCA | 37.1% | — |
| ForecastBench | 62 | — |
| LiveBench | — | 54.3% |

## Math

- Claude Opus 4.1: 22.3 (#277)
- Grok-2 (Dec 2024): 20.8 (#284)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 68.9% | 11.5% |
| LMArena Math | 1431 | 1283 |
| FrontierMath (Feb 2025 set) | 7.2% | 0.7% |
| FrontierMath (Tiers 1-3) | 12.6% | — |
| FrontierMath Tier 4 | 2.4% | — |
| LiveBench Math | — | 54.9% |
| MATH Level 5 | — | 63.5% |
| FrontierMath Tier 4 (v1) | 4.2% | — |

## Knowledge

- Claude Opus 4.1: 42.0 (#101)
- Grok-2 (Dec 2024): 29.8 (#233)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| GPQA Diamond | 77.3% | 53.8% |
| Confabulations | 17.1% | 20.1% |
| LMArena Expert | 1439 | 1254 |
| Humanity's Last Exam | 11.5% | — |
| Vectara Hallucination Rate | 11.8% | — |

## Multimodal

- Claude Opus 4.1: 26.8 (#119)
- Grok-2 (Dec 2024): —

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| VPCT | 35% | — |

## Multilingual

- Claude Opus 4.1: 52.0 (#95)
- Grok-2 (Dec 2024): 43.1 (#188)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1405 | 1282 |
| LMArena Chinese | 1427 | 1289 |
| LMArena French | 1431 | 1318 |
| LMArena German | 1413 | 1287 |
| LMArena Japanese | 1378 | 1244 |
| LMArena Korean | 1380 | 1237 |
| LMArena Russian | 1422 | 1286 |
| LMArena Spanish | 1448 | 1281 |

## Instruction Following

- Claude Opus 4.1: 75.6 (#58)
- Grok-2 (Dec 2024): 66.9 (#202)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Instruction Following | 1435 | 1270 |
| LiveBench Instruction Following | — | 69.6% |

## Long Context

- Claude Opus 4.1: 44.5 (#63)
- Grok-2 (Dec 2024): 38.8 (#190)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1455 | 1276 |

## Writing & Preference

- Claude Opus 4.1: 62.4 (#74)
- Grok-2 (Dec 2024): 48.6 (#198)

| Benchmark | Claude Opus 4.1 | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1419 | 1305 |
| LMArena Creative Writing | 1412 | 1284 |
| Short-Story Creative Writing | 84.7% | 63.6% |
| LMArena Multi-Turn | 1444 | 1290 |
| LiveBench Language | — | 45.6% |

## FAQ

### Is Claude Opus 4.1 better than Grok-2 (Dec 2024)?

Claude Opus 4.1 is the stronger model overall, scoring 41.0 to 33.7 on the Noometry Index.

### Is Claude Opus 4.1 or Grok-2 (Dec 2024) better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 33.3 in the Noometry coding category.

### How many benchmarks do Claude Opus 4.1 and Grok-2 (Dec 2024) share?

26 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and Grok-2 (Dec 2024) has 34.