# Grok 4 vs o4-mini

> Grok 4 is the stronger model overall, scoring 48.1 to 41.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/grok-4-vs-o4-mini
- Last updated: 2026-10-11
- Shared benchmarks: 43

## Summary

- They share 43 benchmarks with published results for both. Grok 4 scores higher in 8 categories and o4-mini in 2 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 leads 63.1 to 45.5.
- The biggest single-benchmark swing is SimpleBench: 60.5% for Grok 4 and 38.7% for o4-mini.

## Snapshot

| | Grok 4 | o4-mini |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 48.1 | 41.6 |
| Rank | 56 | 132 |
| Context | — | 200K |
| Input $/M | — | $1.10 |
| Output $/M | — | $4.40 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok 4: 50.3 (#46)
- o4-mini: 40.9 (#127)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| Aider Polyglot | 79.6% | 72% |
| WeirdML | 45.7% | 52.6% |
| LMArena Coding | 1408 | 1368 |
| SWE-bench Verified (bash only) | — | 45% |
| GSO | — | 3.6% |
| CadEval | — | 62% |
| ALE-Bench | — | 826.17 |
| AlgoTune | — | 1.72 |

## Agentic & Tool Use

- Grok 4: 32.3 (#68)
- o4-mini: 32.6 (#61)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| Berkeley Function Calling Leaderboard | 63% | 53.2% |
| GDPval | 21.1% | 25.3% |
| METR Time Horizons | 66.6% | 63.9% |
| Terminal-Bench | 27.2% | — |
| Cybench | 43% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| LMArena Search | 1142 | — |

## Reasoning

- Grok 4: 36.7 (#65)
- o4-mini: 24.6 (#162)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| ARC-AGI-2 | 16% | 6.1% |
| SimpleBench | 60.5% | 38.7% |
| Kagi LLM Benchmark | 73.6% | 67.6% |
| ARC-AGI-1 | 66.7% | 58.7% |
| Chess Puzzles | 28% | 26% |
| LMArena Hard Prompts | 1409 | 1351 |
| Epoch Capabilities Index | 146.44 | 145.64 |
| ForecastBench | 60.9 | 61.8 |
| CritPt | — | 0.6% |
| EnigmaEval | — | 9.2% |
| Mystery Game Puzzles | — | 5% |
| DTBench | — | 77.6% |
| LMCA | — | 26.5% |

## Math

- Grok 4: 48.4 (#64)
- o4-mini: 40.8 (#89)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84% | 81.7% |
| Omni-MATH | 60.3% | 72% |
| LMArena Math | 1422 | 1389 |
| FrontierMath (Feb 2025 set) | 19.7% | 24.8% |
| FrontierMath Tier 4 (v1) | 2.1% | 6.3% |
| FrontierMath (Tiers 1-3) | — | 36.1% |
| FrontierMath Tier 4 | — | 4.9% |
| MATH Level 5 | — | 97.8% |

## Knowledge

- Grok 4: 53.8 (#55)
- o4-mini: 43.6 (#91)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| GPQA Diamond | 87% | 79.6% |
| MMLU-Pro | 85.1% | 82% |
| Confabulations | 12.4% | 15.8% |
| GPQA (HELM) | 72.7% | 73.5% |
| LMArena Expert | 1415 | 1343 |
| Humanity's Last Exam | — | 18.1% |
| SimpleQA Verified | — | 19.6% |
| Vectara Hallucination Rate | — | 18.6% |

## Multimodal

- Grok 4: 33.7 (#94)
- o4-mini: 40.2 (#49)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| LMArena Vision | 1210 | 1194 |
| GeoBench | 45% | 64% |
| VPCT | — | 57.5% |

## Multilingual

- Grok 4: 51.8 (#103)
- o4-mini: 47.0 (#154)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| LMArena Non-English | 1403 | 1337 |
| LMArena Chinese | 1427 | 1354 |
| LMArena French | 1418 | 1364 |
| LMArena German | 1429 | 1336 |
| LMArena Japanese | 1394 | 1308 |
| LMArena Korean | 1377 | 1312 |
| LMArena Russian | 1410 | 1334 |
| LMArena Spanish | 1420 | 1347 |

## Instruction Following

- Grok 4: 79.2 (#5)
- o4-mini: 75.2 (#68)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| IFEval | 94.9% | 92.8% |
| LMArena Instruction Following | 1387 | 1321 |

## Long Context

- Grok 4: 63.1 (#4)
- o4-mini: 45.5 (#33)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| Fiction.LiveBench | 94.4% | 77.8% |
| LMArena Longer Query | 1409 | 1315 |

## Writing & Preference

- Grok 4: 58.5 (#116)
- o4-mini: 54.0 (#152)

| Benchmark | Grok 4 | o4-mini |
|---|---|---|
| LMArena Text | 1411 | 1353 |
| LMArena Creative Writing | 1397 | 1294 |
| Short-Story Creative Writing | 76.9% | 75% |
| WildBench | 79.7% | 85.4% |
| LMArena Multi-Turn | 1416 | 1350 |

## FAQ

### Is Grok 4 better than o4-mini?

Grok 4 is the stronger model overall, scoring 48.1 to 41.6 on the Noometry Index.

### Is Grok 4 or o4-mini better for coding?

Grok 4 scores higher on coding benchmarks: 50.3 versus 40.9 in the Noometry coding category.

### How many benchmarks do Grok 4 and o4-mini share?

43 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and o4-mini has 60.