Mistral AIDevstral Small
Devstral Small is a Mistral AI open-weights model, released 10 Jul 2025. It is not yet ranked: no independent benchmark results so far, only pricing and metadata. At $0.150 per million tokens blended it is among the cheapest fifth of ranked models.
- Blended price
- $0.150/M
- $0.100 in · $0.300 out
- Output speed
- –
- First answer
- –
- Context
- 128k
Versions
Mistral AI has shipped 4 models under this name. Each is ranked on its own results; a newer version often has fewer results so far, which holds its index nearer the average until more arrive.
| Model | Released | Index | Rank |
|---|---|---|---|
| Devstral Small 2 | 9 Dec 2025 | 41.9 | #488 |
| Devstral Small 2 | 9 Dec 2025 | – | – |
| Devstral Smallthis page | 10 Jul 2025 | – | – |
| Devstral Small | 7 May 2025 | 42.8 | #466 |
Benchmark results
One column per reasoning effort. Rank is among every configuration of every model on that benchmark. Hover a score for the run it came from.
Coding
| Benchmark | default | Source |
|---|---|---|
| SWE-bench Verified (any scaffold)not in index | 38.0%#57 | SWE-bench |
What a task costs
Estimates from list price, output speed and time to first answer for the best configuration. “With caching” assumes three-quarters of the input is served from the prompt cache. Reasoning tokens are not modelled.
| Workload | Tokens in / out | Cost | With caching | Time |
|---|---|---|---|---|
| Chat reply | 400 / 300 | $0.0001 | – | – |
| Summarise a 30-page report | 12,000 / 600 | $0.0014 | – | – |
| Code edit | 6,000 / 1,500 | $0.0011 | – | – |
| Agentic coding session | 60,000 / 4,000 | $0.0072 | – | – |
| Structured extraction | 2,000 / 200 | $0.0003 | – | – |
See also
Data as of 10 Sept 2026. Compare with another model.