# Devstral Small 2505 vs Mistral Small

> Devstral Small 2505 and Mistral Small score almost the same on the Noometry Index (33.9 vs 33.1), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/devstral-small-vs-mistral-small
- Last updated: 2026-10-10
- Shared benchmarks: 3

## Summary

- They share 3 benchmarks with published results for both. Devstral Small 2505 scores higher in 1 category and Mistral Small in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where Devstral Small 2505 leads 38.6 to 33.5.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.15 / $0.60 for Mistral Small.
- Mistral Small accepts more context: 256K tokens versus 128K.

## Snapshot

| | Devstral Small 2505 | Mistral Small |
|---|---|---|
| Provider | Mistral AI | Mistral AI |
| Noometry Index | 33.9 | 33.1 |
| Rank | 228 | 238 |
| Context | 128K | 256K |
| Input $/M | $0.10 | $0.15 |
| Output $/M | $0.30 | $0.60 |
| Weights | Open | Open |

## Coding

- Devstral Small 2505: 38.6 (#160)
- Mistral Small: 33.5 (#242)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| SciCode | 28.8% | 26.5% |
| SWE-bench Verified (bash only) | 56.4% | — |
| BigCodeBench Instruct | — | 36.1% |
| LiveBench Coding | — | 36.2% |
| LMArena Coding | — | 1363 |
| BigCodeBench Complete | — | 46.6% |
| ALE-Bench | — | 497.62 |

## Agentic & Tool Use

- Devstral Small 2505: —
- Mistral Small: 27.9 (#87)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 37.1% |

## Reasoning

- Devstral Small 2505: 19.1 (#243)
- Mistral Small: 19.3 (#238)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | 37.8% |
| CritPt | 0% | 0% |
| LiveBench Reasoning | — | 44.8% |
| LMArena Hard Prompts | — | 1336 |
| DTBench | — | 70.9% |
| LiveBench Data Analysis | — | 53.7% |
| LMCA | — | 20.6% |
| LiveBench | — | 44% |

## Math

- Devstral Small 2505: —
- Mistral Small: 15.4 (#287)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 5.8% |
| LiveBench Math | — | 39.9% |
| LMArena Math | — | 1341 |
| MATH Level 5 | — | 46.8% |

## Knowledge

- Devstral Small 2505: —
- Mistral Small: 30.9 (#214)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| GPQA Diamond | — | 47.5% |
| Vectara Hallucination Rate | — | 5.1% |
| LMArena Expert | — | 1293 |
| MMLU | — | 68.7% |

## Multimodal

- Devstral Small 2505: —
- Mistral Small: 32.9 (#91)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Vision | — | 1142 |

## Multilingual

- Devstral Small 2505: —
- Mistral Small: 45.7 (#164)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Non-English | — | 1315 |
| LMArena Chinese | — | 1342 |
| LMArena French | — | 1337 |
| LMArena German | — | 1341 |
| LMArena Japanese | — | 1275 |
| LMArena Korean | — | 1260 |
| LMArena Russian | — | 1324 |
| LMArena Spanish | — | 1346 |

## Instruction Following

- Devstral Small 2505: —
- Mistral Small: 66.6 (#204)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LiveBench Instruction Following | — | 63.7% |
| LMArena Instruction Following | — | 1310 |

## Long Context

- Devstral Small 2505: —
- Mistral Small: 40.4 (#151)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Longer Query | — | 1327 |

## Writing & Preference

- Devstral Small 2505: —
- Mistral Small: 52.6 (#165)

| Benchmark | Devstral Small 2505 | Mistral Small |
|---|---|---|
| LMArena Text | — | 1338 |
| LMArena Creative Writing | — | 1304 |
| LMArena Multi-Turn | — | 1344 |
| LiveBench Language | — | 30.5% |

## FAQ

### Is Devstral Small 2505 better than Mistral Small?

Devstral Small 2505 and Mistral Small score almost the same on the Noometry Index (33.9 vs 33.1), so choose on price, context window or the category you care about most.

### Which is cheaper, Devstral Small 2505 or Mistral Small?

Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Mistral Small lists at $0.15 and $0.60.

### Is Devstral Small 2505 or Mistral Small better for coding?

Devstral Small 2505 scores higher on coding benchmarks: 38.6 versus 33.5 in the Noometry coding category.

### Which has the bigger context window?

Mistral Small does, with 256K tokens against 128K.

### How many benchmarks do Devstral Small 2505 and Mistral Small share?

3 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Mistral Small has 39.