# Chatgpt 4o Latest 20250326 vs Grok 3

> Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 39.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-grok-3
- Last updated: 2026-10-11
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 5 categories and Grok 3 in 3 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 13.7.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 61.3% for Grok 3.

## Snapshot

| | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 43.8 | 39.9 |
| Rank | 82 | 157 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Chatgpt 4o Latest 20250326: 41.6 (#122)
- Grok 3: 41.9 (#115)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Coding | 1413 | 1432 |
| Aider Polyglot | — | 53.3% |
| WeirdML | — | 37.2% |

## Agentic & Tool Use

- Chatgpt 4o Latest 20250326: —
- Grok 3: 30.5 (#76)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| BALROG | — | 29.5% |

## Reasoning

- Chatgpt 4o Latest 20250326: 33.8 (#71)
- Grok 3: 13.7 (#333)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| Kagi LLM Benchmark | 75% | 61.3% |
| LMArena Hard Prompts | 1424 | 1434 |
| ARC-AGI-2 | — | 0% |
| SimpleBench | — | 36.1% |
| ARC-AGI-1 | — | 5.5% |
| Epoch Capabilities Index | — | 138.33 |

## Math

- Chatgpt 4o Latest 20250326: 38.6 (#134)
- Grok 3: 38.0 (#145)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Math | 1407 | 1391 |
| OTIS Mock AIME 2024-2025 | — | 55.6% |
| Omni-MATH | — | 46.4% |
| MATH Level 5 | — | 88.7% |
| FrontierMath (Feb 2025 set) | — | 3.8% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Chatgpt 4o Latest 20250326: 39.2 (#137)
- Grok 3: 46.2 (#82)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| Confabulations | 16.6% | 14.2% |
| LMArena Expert | 1401 | 1421 |
| GPQA Diamond | — | 75.8% |
| MMLU-Pro | — | 78.8% |
| Vectara Hallucination Rate | — | 5.8% |
| GPQA (HELM) | — | 65% |

## Multimodal

- Chatgpt 4o Latest 20250326: 39.6 (#58)
- Grok 3: —

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Vision | 1243 | — |

## Multilingual

- Chatgpt 4o Latest 20250326: 52.9 (#76)
- Grok 3: 52.3 (#87)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Non-English | 1419 | 1410 |
| LMArena Chinese | 1457 | 1448 |
| LMArena French | 1446 | 1460 |
| LMArena German | 1423 | 1431 |
| LMArena Japanese | 1405 | 1387 |
| LMArena Korean | 1396 | 1373 |
| LMArena Russian | 1429 | 1416 |
| LMArena Spanish | 1434 | 1417 |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.0 (#107)
- Grok 3: 75.0 (#73)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1409 |
| IFEval | — | 88.4% |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#107)
- Grok 3: 38.7 (#192)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1413 | 1439 |
| Fiction.LiveBench | — | 58.3% |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.6 (#72)
- Grok 3: 55.8 (#141)

| Benchmark | Chatgpt 4o Latest 20250326 | Grok 3 |
|---|---|---|
| LMArena Text | 1429 | 1426 |
| LMArena Creative Writing | 1405 | 1414 |
| EQ-Bench Creative Writing | 1501 | 1186 |
| LMArena Multi-Turn | 1454 | 1425 |
| Short-Story Creative Writing | — | 76.4% |
| WildBench | — | 84.9% |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than Grok 3?

Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 39.9 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or Grok 3 better for coding?

They score almost the same on coding (41.6 vs 41.9); test both on your own repository before choosing.

### How many benchmarks do Chatgpt 4o Latest 20250326 and Grok 3 share?

20 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Grok 3 has 40.