# Grok 4.1 vs o3-pro

> o3-pro is the stronger model overall, scoring 42.9 to 41.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-1-vs-o3-pro
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in long context, where o3-pro leads 72.2 to 43.2.

## Snapshot

| | Grok 4.1 | o3-pro |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 41.5 | 42.9 |
| Rank | 134 | 105 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4.1: 33.7 (#253)
- o3-pro: 55.5 (#24)

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| LMArena WebDev | 1214 | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1445 | — |

## Agentic & Tool Use

- Grok 4.1: 34.1 (#49)
- o3-pro: —

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| Cybench | 39% | — |

## Reasoning

- Grok 4.1: 29.5 (#91)
- o3-pro: 23.8 (#171)

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1435 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |

## Math

- Grok 4.1: 38.9 (#120)
- o3-pro: —

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| LMArena Math | 1422 | — |

## Knowledge

- Grok 4.1: 39.5 (#133)
- o3-pro: 29.5 (#238)

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1417 | — |

## Multilingual

- Grok 4.1: 53.4 (#68)
- o3-pro: —

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| LMArena Non-English | 1425 | — |
| LMArena Chinese | 1465 | — |
| LMArena French | 1448 | — |
| LMArena German | 1446 | — |
| LMArena Japanese | 1397 | — |
| LMArena Korean | 1407 | — |
| LMArena Russian | 1434 | — |
| LMArena Spanish | 1438 | — |

## Instruction Following

- Grok 4.1: 73.8 (#111)
- o3-pro: —

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1400 | — |

## Long Context

- Grok 4.1: 43.2 (#100)
- o3-pro: 72.2 (#1)

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1416 | — |

## Writing & Preference

- Grok 4.1: 62.4 (#75)
- o3-pro: 57.1 (#133)

| Benchmark | Grok 4.1 | o3-pro |
|---|---|---|
| LMArena Text | 1437 | — |
| LMArena Creative Writing | 1411 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1437 | — |

## FAQ

### Is Grok 4.1 better than o3-pro?

o3-pro is the stronger model overall, scoring 42.9 to 41.5 on the Noometry Index.

### Is Grok 4.1 or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.5 versus 33.7 in the Noometry coding category.

### How many benchmarks do Grok 4.1 and o3-pro share?

0 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and o3-pro has 12.