# GPT-4o vs Grok 3

> Grok 3 is the stronger model overall, scoring 39.6 to 28.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4o-vs-grok-3
- Last updated: 2026-10-10
- Shared benchmarks: 37

## Summary

- They share 37 benchmarks with published results for both. GPT-4o scores higher in 1 category and Grok 3 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 3 leads 36.2 to 10.2.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 6.4% for GPT-4o and 55.6% for Grok 3.

## Snapshot

| | GPT-4o | Grok 3 |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 28.5 | 39.6 |
| Rank | 316 | 150 |
| Context | 128K | — |
| Input $/M | $2.50 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-4o: 25.1 (#323)
- Grok 3: 41.5 (#113)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| Aider Polyglot | 45.3% | 53.3% |
| WeirdML | 25.1% | 37.2% |
| LMArena Coding | 1297 | 1432 |
| SWE-bench Verified | 31% | — |
| SWE-bench Verified (bash only) | 21.6% | — |
| GSO | 0% | — |
| BigCodeBench Instruct | 51.1% | — |
| LiveBench Coding | 51.4% | — |
| BigCodeBench Complete | 61.1% | — |
| CadEval | 26% | — |
| HumanEval+ | 87.2% | — |
| MBPP+ | 72.2% | — |

## Agentic & Tool Use

- GPT-4o: 20.8 (#133)
- Grok 3: 30.2 (#69)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| BALROG | 32.3% | 29.5% |
| GDPval | 9.9% | — |
| TheAgentCompany | 8.6% | — |
| Cybench | 12.5% | — |
| LMArena Search | 1006 | — |
| METR Time Horizons | 40.8% | — |

## Reasoning

- GPT-4o: 9.4 (#338)
- Grok 3: 13.8 (#322)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 0% | 0% |
| SimpleBench | 17.8% | 36.1% |
| ARC-AGI-1 | 4.5% | 5.5% |
| LMArena Hard Prompts | 1281 | 1433 |
| Epoch Capabilities Index | 128.97 | 138.34 |
| Kagi LLM Benchmark | — | 61.3% |
| CritPt | 0% | — |
| Chess Puzzles | 13% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 55.8% | — |
| DTBench | 64.5% | — |
| LiveBench Data Analysis | 60.9% | — |
| LMCA | 16.6% | — |
| ForecastBench | 57.7 | — |
| LiveBench | 55.3% | — |

## Math

- GPT-4o: 10.2 (#303)
- Grok 3: 36.2 (#122)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 6.4% | 55.6% |
| Omni-MATH | 29.3% | 46.4% |
| LMArena Math | 1285 | 1390 |
| MATH Level 5 | 53.3% | 88.7% |
| FrontierMath (Feb 2025 set) | 0.3% | 3.8% |
| FrontierMath (Tiers 1-3) | 0.4% | — |
| LiveBench Math | 49.5% | — |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- GPT-4o: 28.8 (#235)
- Grok 3: 46.0 (#76)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| GPQA Diamond | 49.2% | 75.8% |
| MMLU-Pro | 71.3% | 78.8% |
| Confabulations | 15.3% | 14.2% |
| Vectara Hallucination Rate | 9.6% | 5.8% |
| GPQA (HELM) | 52% | 65% |
| LMArena Expert | 1250 | 1420 |
| Humanity's Last Exam | 2.7% | — |
| SimpleQA Verified | 26% | — |
| MMLU | 88.1% | — |

## Multimodal

- GPT-4o: 33.9 (#85)
- Grok 3: —

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| LMArena Vision | 1137 | — |
| Video-MME | 71.9% | — |
| GeoBench | 71% | — |
| VPCT | 40% | — |
| ScienceQA | 88.5% | — |

## Multilingual

- GPT-4o: 43.4 (#181)
- Grok 3: 52.5 (#81)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| LMArena Non-English | 1283 | 1411 |
| LMArena Chinese | 1277 | 1448 |
| LMArena French | 1303 | 1460 |
| LMArena German | 1282 | 1431 |
| LMArena Japanese | 1257 | 1389 |
| LMArena Korean | 1234 | 1374 |
| LMArena Russian | 1286 | 1416 |
| LMArena Spanish | 1292 | 1417 |

## Instruction Following

- GPT-4o: 66.8 (#202)
- Grok 3: 75.2 (#69)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| IFEval | 81.7% | 88.4% |
| LMArena Instruction Following | 1278 | 1409 |
| LiveBench Instruction Following | 68.6% | — |

## Long Context

- GPT-4o: 39.4 (#174)
- Grok 3: 38.7 (#187)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| Fiction.LiveBench | 66.7% | 58.3% |
| LMArena Longer Query | 1289 | 1439 |

## Writing & Preference

- GPT-4o: 52.8 (#160)
- Grok 3: 56.0 (#136)

| Benchmark | GPT-4o | Grok 3 |
|---|---|---|
| LMArena Text | 1300 | 1426 |
| LMArena Creative Writing | 1291 | 1414 |
| Short-Story Creative Writing | 81.8% | 76.4% |
| WildBench | 82.8% | 84.9% |
| LMArena Multi-Turn | 1302 | 1424 |
| EQ-Bench Creative Writing | — | 1186 |
| LiveBench Language | 47.6% | — |

## FAQ

### Is GPT-4o better than Grok 3?

Grok 3 is the stronger model overall, scoring 39.6 to 28.5 on the Noometry Index.

### Is GPT-4o or Grok 3 better for coding?

Grok 3 scores higher on coding benchmarks: 41.5 versus 25.1 in the Noometry coding category.

### How many benchmarks do GPT-4o and Grok 3 share?

37 benchmarks have published results for both models. GPT-4o has 72 scored results on Noometry and Grok 3 has 40.