# Chatgpt 4o Latest 20250326 vs Devstral Small 2505

> Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 34.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/chatgpt-4o-vs-devstral-small
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Chatgpt 4o Latest 20250326 scores higher in 2 categories and Devstral Small 2505 in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Chatgpt 4o Latest 20250326 leads 33.8 to 19.7.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 37.7% for Devstral Small 2505.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 43.8 | 34.3 |
| Rank | 82 | 233 |
| Context | — | 128K |
| Input $/M | — | $0.10 |
| Output $/M | — | $0.30 |
| Weights | Proprietary | Open |

## Coding

- Chatgpt 4o Latest 20250326: 41.6 (#122)
- Devstral Small 2505: 38.9 (#166)

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| SWE-bench Verified (bash only) | — | 56.4% |
| SciCode | — | 28.8% |
| LMArena Coding | 1413 | — |

## Reasoning

- Chatgpt 4o Latest 20250326: 33.8 (#71)
- Devstral Small 2505: 19.7 (#252)

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| Kagi LLM Benchmark | 75% | 37.7% |
| CritPt | — | 0% |
| LMArena Hard Prompts | 1424 | — |

## Math

- Chatgpt 4o Latest 20250326: 38.6 (#134)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| LMArena Math | 1407 | — |

## Knowledge

- Chatgpt 4o Latest 20250326: 39.2 (#137)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| Confabulations | 16.6% | — |
| LMArena Expert | 1401 | — |

## Multimodal

- Chatgpt 4o Latest 20250326: 39.6 (#58)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| LMArena Vision | 1243 | — |

## Multilingual

- Chatgpt 4o Latest 20250326: 52.9 (#76)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| LMArena Non-English | 1419 | — |
| LMArena Chinese | 1457 | — |
| LMArena French | 1446 | — |
| LMArena German | 1423 | — |
| LMArena Japanese | 1405 | — |
| LMArena Korean | 1396 | — |
| LMArena Russian | 1429 | — |
| LMArena Spanish | 1434 | — |

## Instruction Following

- Chatgpt 4o Latest 20250326: 74.0 (#107)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| LMArena Instruction Following | 1403 | — |

## Long Context

- Chatgpt 4o Latest 20250326: 43.1 (#107)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| LMArena Longer Query | 1413 | — |

## Writing & Preference

- Chatgpt 4o Latest 20250326: 62.6 (#72)
- Devstral Small 2505: —

| Benchmark | Chatgpt 4o Latest 20250326 | Devstral Small 2505 |
|---|---|---|
| LMArena Text | 1429 | — |
| LMArena Creative Writing | 1405 | — |
| EQ-Bench Creative Writing | 1501 | — |
| LMArena Multi-Turn | 1454 | — |

## FAQ

### Is Chatgpt 4o Latest 20250326 better than Devstral Small 2505?

Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 34.3 on the Noometry Index.

### Is Chatgpt 4o Latest 20250326 or Devstral Small 2505 better for coding?

Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.6 versus 38.9 in the Noometry coding category.

### How many benchmarks do Chatgpt 4o Latest 20250326 and Devstral Small 2505 share?

1 benchmark has published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Devstral Small 2505 has 4.