# Devstral Small 2505 vs Mistral Small 3

> Devstral Small 2505 is the stronger model overall, scoring 34.3 to 31.2 on the Noometry Index. Mistral Small 3 costs 2.6× less per token, which makes it the better buy when Devstral Small 2505's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/devstral-small-vs-mistral-small-3
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- Mistral Small 3 is cheaper at $0.05 / $0.08 per million input/output tokens, against $0.10 / $0.30 for Devstral Small 2505.
- Devstral Small 2505 accepts more context: 128K tokens versus 33K.

## Snapshot

| | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| Provider | Mistral AI | Mistral AI |
| Noometry Index | 34.3 | 31.2 |
| Rank | 233 | 278 |
| Context | 128K | 33K |
| Input $/M | $0.10 | $0.05 |
| Output $/M | $0.30 | $0.08 |
| Weights | Open | Open |

## Coding

- Devstral Small 2505: 38.9 (#166)
- Mistral Small 3: 36.5 (#207)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| BigCodeBench Instruct | — | 45.3% |
| LMArena Coding | — | 1246 |
| BigCodeBench Complete | — | 50.4% |

## Reasoning

- Devstral Small 2505: 19.7 (#252)
- Mistral Small 3: 18.9 (#273)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |
| Chess Puzzles | — | 0% |
| LMArena Hard Prompts | — | 1233 |
| Epoch Capabilities Index | — | 127.07 |

## Math

- Devstral Small 2505: —
- Mistral Small 3: 16.3 (#295)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 6.7% |
| LMArena Math | — | 1240 |

## Knowledge

- Devstral Small 2505: —
- Mistral Small 3: 25.1 (#263)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| GPQA Diamond | — | 47.3% |
| Confabulations | — | 25.2% |
| LMArena Expert | — | 1202 |

## Multilingual

- Devstral Small 2505: —
- Mistral Small 3: 37.3 (#236)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| LMArena Non-English | — | 1198 |
| LMArena Chinese | — | 1204 |
| LMArena French | — | 1203 |
| LMArena German | — | 1211 |
| LMArena Japanese | — | 1111 |
| LMArena Korean | — | 1188 |
| LMArena Russian | — | 1216 |

## Instruction Following

- Devstral Small 2505: —
- Mistral Small 3: 63.7 (#229)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| LMArena Instruction Following | — | 1214 |

## Long Context

- Devstral Small 2505: —
- Mistral Small 3: 37.8 (#211)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| LMArena Longer Query | — | 1246 |

## Writing & Preference

- Devstral Small 2505: —
- Mistral Small 3: 32.2 (#280)

| Benchmark | Devstral Small 2505 | Mistral Small 3 |
|---|---|---|
| LMArena Text | — | 1234 |
| LMArena Creative Writing | — | 1195 |
| EQ-Bench Creative Writing | — | 707 |
| LMArena Multi-Turn | — | 1217 |

## FAQ

### Is Devstral Small 2505 better than Mistral Small 3?

Devstral Small 2505 is the stronger model overall, scoring 34.3 to 31.2 on the Noometry Index. Mistral Small 3 costs 2.6× less per token, which makes it the better buy when Devstral Small 2505's lead doesn't matter for your workload.

### Which is cheaper, Devstral Small 2505 or Mistral Small 3?

Mistral Small 3 is cheaper. It lists at $0.05 per million input tokens and $0.08 per million output tokens; Devstral Small 2505 lists at $0.10 and $0.30.

### Is Devstral Small 2505 or Mistral Small 3 better for coding?

Devstral Small 2505 scores higher on coding benchmarks: 38.9 versus 36.5 in the Noometry coding category.

### Which has the bigger context window?

Devstral Small 2505 does, with 128K tokens against 33K.

### How many benchmarks do Devstral Small 2505 and Mistral Small 3 share?

0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Mistral Small 3 has 24.