# Claude 3 Opus vs Grok-2 (Dec 2024)

> Grok-2 (Dec 2024) is the stronger model overall, scoring 33.7 to 29.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-grok-2
- Last updated: 2026-10-10
- Shared benchmarks: 32

## Summary

- They share 32 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Grok-2 (Dec 2024) in 8 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok-2 (Dec 2024) leads 20.8 to 14.8.
- The biggest single-benchmark swing is MATH Level 5: 37.5% for Claude 3 Opus and 63.5% for Grok-2 (Dec 2024).

## Snapshot

| | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 29.5 | 33.7 |
| Rank | 310 | 239 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude 3 Opus: 32.9 (#267)
- Grok-2 (Dec 2024): 33.3 (#258)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| WeirdML | 19.2% | 22.2% |
| LiveBench Coding | 38.6% | 46.4% |
| LMArena Coding | 1264 | 1287 |
| BigCodeBench Instruct | 45.5% | — |
| BigCodeBench Complete | 57.4% | — |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.6 (#116)
- Grok-2 (Dec 2024): —

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |

## Reasoning

- Claude 3 Opus: 14.6 (#324)
- Grok-2 (Dec 2024): 16.9 (#299)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| SimpleBench | 23.5% | 22.7% |
| LiveBench Reasoning | 40.6% | 54.8% |
| LMArena Hard Prompts | 1245 | 1272 |
| DTBench | 61.6% | 65.2% |
| LiveBench Data Analysis | 57.9% | 54.5% |
| Epoch Capabilities Index | 126.91 | 130.48 |
| LiveBench | 49.2% | 54.3% |
| Chess Puzzles | 5% | — |
| EnigmaEval | 0.8% | — |
| LMCA | 17% | — |
| ForecastBench | 58.4 | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 14.8 (#299)
- Grok-2 (Dec 2024): 20.8 (#284)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 11.5% |
| LiveBench Math | 43.6% | 54.9% |
| LMArena Math | 1273 | 1283 |
| MATH Level 5 | 37.5% | 63.5% |
| FrontierMath (Feb 2025 set) | — | 0.7% |

## Knowledge

- Claude 3 Opus: 24.5 (#267)
- Grok-2 (Dec 2024): 29.8 (#233)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| GPQA Diamond | 47.2% | 53.8% |
| Confabulations | 22.7% | 20.1% |
| LMArena Expert | 1223 | 1254 |
| SimpleQA Verified | 12.6% | — |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 27.1 (#116)
- Grok-2 (Dec 2024): —

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Vision | 1023 | — |

## Multilingual

- Claude 3 Opus: 41.4 (#207)
- Grok-2 (Dec 2024): 43.1 (#188)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Non-English | 1258 | 1282 |
| LMArena Chinese | 1248 | 1289 |
| LMArena French | 1275 | 1318 |
| LMArena German | 1258 | 1287 |
| LMArena Japanese | 1204 | 1244 |
| LMArena Korean | 1187 | 1237 |
| LMArena Russian | 1280 | 1286 |
| LMArena Spanish | 1246 | 1281 |

## Instruction Following

- Claude 3 Opus: 64.1 (#228)
- Grok-2 (Dec 2024): 66.9 (#202)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| LiveBench Instruction Following | 63.9% | 69.6% |
| LMArena Instruction Following | 1248 | 1270 |

## Long Context

- Claude 3 Opus: 38.2 (#202)
- Grok-2 (Dec 2024): 38.8 (#190)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Longer Query | 1259 | 1276 |

## Writing & Preference

- Claude 3 Opus: 47.2 (#213)
- Grok-2 (Dec 2024): 48.6 (#198)

| Benchmark | Claude 3 Opus | Grok-2 (Dec 2024) |
|---|---|---|
| LMArena Text | 1262 | 1305 |
| LMArena Creative Writing | 1235 | 1284 |
| LMArena Multi-Turn | 1275 | 1290 |
| LiveBench Language | 50.4% | 45.6% |
| Short-Story Creative Writing | — | 63.6% |

## FAQ

### Is Claude 3 Opus better than Grok-2 (Dec 2024)?

Grok-2 (Dec 2024) is the stronger model overall, scoring 33.7 to 29.5 on the Noometry Index.

### Is Claude 3 Opus or Grok-2 (Dec 2024) better for coding?

They score almost the same on coding (32.9 vs 33.3); test both on your own repository before choosing.

### How many benchmarks do Claude 3 Opus and Grok-2 (Dec 2024) share?

32 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Grok-2 (Dec 2024) has 34.