# Grok 4 vs o3-mini

> Grok 4 is the stronger model overall, scoring 48.1 to 36.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-vs-o3-mini
- Last updated: 2026-10-11
- Shared benchmarks: 33

## Summary

- They share 33 benchmarks with published results for both. Grok 4 scores higher in 9 categories and o3-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 33.8.
- The biggest single-benchmark swing is Fiction.LiveBench: 94.4% for Grok 4 and 50% for o3-mini.

## Snapshot

| | Grok 4 | o3-mini |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 48.1 | 36.7 |
| Rank | 56 | 212 |
| Context | — | 200K |
| Input $/M | — | $1.10 |
| Output $/M | — | $4.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4: 50.3 (#46)
- o3-mini: 40.8 (#132)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| Aider Polyglot | 79.6% | 60.4% |
| WeirdML | 45.7% | 43.7% |
| LMArena Coding | 1408 | 1378 |
| SciCode | — | 39.8% |
| GSO | — | 1.3% |
| LiveBench Coding | — | 82.7% |
| CadEval | — | 54% |

## Agentic & Tool Use

- Grok 4: 32.3 (#68)
- o3-mini: 29.6 (#84)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| Cybench | 43% | 22.5% |
| Terminal-Bench | 27.2% | — |
| Berkeley Function Calling Leaderboard | 63% | — |
| GDPval | 21.1% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 66.6% | — |

## Reasoning

- Grok 4: 36.7 (#65)
- o3-mini: 16.3 (#305)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| ARC-AGI-2 | 16% | 3% |
| SimpleBench | 60.5% | 22.8% |
| ARC-AGI-1 | 66.7% | 34.5% |
| Chess Puzzles | 28% | 17% |
| LMArena Hard Prompts | 1409 | 1366 |
| Epoch Capabilities Index | 146.44 | 140.34 |
| ForecastBench | 60.9 | 59.6 |
| Kagi LLM Benchmark | 73.6% | — |
| CritPt | — | 0.3% |
| LiveBench Reasoning | — | 89.6% |
| Mystery Game Puzzles | — | 7% |
| DTBench | — | 68.8% |
| LiveBench Data Analysis | — | 70.6% |
| LMCA | — | 19% |
| LiveBench | — | 75.9% |

## Math

- Grok 4: 48.4 (#64)
- o3-mini: 28.1 (#244)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84% | 76.9% |
| LMArena Math | 1422 | 1396 |
| FrontierMath (Feb 2025 set) | 19.7% | 12.4% |
| FrontierMath Tier 4 (v1) | 2.1% | 4.2% |
| FrontierMath (Tiers 1-3) | — | 18.6% |
| FrontierMath Tier 4 | — | 0% |
| Omni-MATH | 60.3% | — |
| LiveBench Math | — | 77.3% |
| MATH Level 5 | — | 96.5% |

## Knowledge

- Grok 4: 53.8 (#55)
- o3-mini: 38.3 (#146)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| GPQA Diamond | 87% | 77% |
| Confabulations | 12.4% | 17.9% |
| LMArena Expert | 1415 | 1364 |
| SimpleQA Verified | — | 15.3% |
| MMLU-Pro | 85.1% | — |
| GPQA (HELM) | 72.7% | — |

## Multimodal

- Grok 4: 33.7 (#94)
- o3-mini: —

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| LMArena Vision | 1210 | — |
| GeoBench | 45% | — |

## Multilingual

- Grok 4: 51.8 (#103)
- o3-mini: 45.7 (#164)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| LMArena Non-English | 1403 | 1319 |
| LMArena Chinese | 1427 | 1379 |
| LMArena French | 1418 | 1334 |
| LMArena German | 1429 | 1303 |
| LMArena Japanese | 1394 | 1286 |
| LMArena Korean | 1377 | 1314 |
| LMArena Russian | 1410 | 1304 |
| LMArena Spanish | 1420 | 1321 |

## Instruction Following

- Grok 4: 79.2 (#5)
- o3-mini: 75.1 (#72)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| LMArena Instruction Following | 1387 | 1337 |
| LiveBench Instruction Following | — | 84.4% |
| IFEval | 94.9% | — |

## Long Context

- Grok 4: 63.1 (#4)
- o3-mini: 33.8 (#256)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| Fiction.LiveBench | 94.4% | 50% |
| LMArena Longer Query | 1409 | 1343 |

## Writing & Preference

- Grok 4: 58.5 (#116)
- o3-mini: 50.3 (#182)

| Benchmark | Grok 4 | o3-mini |
|---|---|---|
| LMArena Text | 1411 | 1337 |
| LMArena Creative Writing | 1397 | 1286 |
| Short-Story Creative Writing | 76.9% | 61.7% |
| LMArena Multi-Turn | 1416 | 1320 |
| WildBench | 79.7% | — |
| LiveBench Language | — | 50.7% |

## FAQ

### Is Grok 4 better than o3-mini?

Grok 4 is the stronger model overall, scoring 48.1 to 36.7 on the Noometry Index.

### Is Grok 4 or o3-mini better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 40.8 in the Noometry coding category.

### How many benchmarks do Grok 4 and o3-mini share?

33 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and o3-mini has 51.