Mistral AI · Released Jul 10, 2025Devstral Small
Mistral coding agent model for repository tasks and software engineering workflows.
- Capability
- —No ECI score yet
- Input
- $0.10per 1M tokens
- Output
- $0.30per 1M tokens
- Context
- 128K128K max output
What it costs
- Input
- $0.10per million tokens
- Output
- $0.30per million tokens
- Blended (3:1)
- $0.15cheaper than 83% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $0.35 |
| Team assistant25M input + 5M output tokens | $4.00 |
| Production app250M input + 50M output tokens | $40.00 |
Official Mistral API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Devstral Small yet.
The details
- Lab
- Mistral AI
- Released
- Jul 10, 2025
- Knowledge cutoff
- May 2025
- Context window
- 128,000 tokens
- Max output
- 128,000 tokens
- Inputs
- Text
- Output
- Text
- Reasoning
- No
- Tool calling
- Yes
- Structured output
- No
- Weights
- Open weights
- API model ID
devstral-small-2507on Mistral- Availability
- 2 API providerslisted on models.dev
- Status
- Deprecated by the provider
What Mistral AI claims
Published by the lab at launch. Settings vary, so compare these only with care.
| Benchmark | Score | Setting | Source |
|---|---|---|---|
| SWE-Bench Verified | 53.6 resolved | — | Source |
More from Mistral AI
About Devstral Small
How much does Devstral Small cost?
Devstral Small costs $0.10 input / $0.30 output per million tokens (official Mistral API price). At a 3:1 input-to-output mix that is $0.15 per million tokens, cheaper than 83% of the 360 priced models we track.
What is the context window of Devstral Small?
Devstral Small accepts up to 128,000 tokens per request and can write up to 128,000 tokens in one response.
How good is Devstral Small?
Epoch AI has not published a Capabilities Index score for Devstral Small yet.
Is Devstral Small open source?
Yes. Mistral AI publishes the weights, so it can be downloaded and self-hosted.
What inputs does Devstral Small support?
Devstral Small accepts text and replies in text. It is not a dedicated reasoning model, supports tool calling.
When was Devstral Small released?
Mistral AI released Devstral Small on Jul 10, 2025. Its training data runs to May 2025.
What are the best alternatives to Devstral Small?
The closest current models from other labs on capability, price and release date are Qwen Flash (Alibaba (Qwen), $0.05 / $0.40), Apertus 8B (Swiss AI, $0.10 / $0.20), Granite-4.0-H-Small (IBM, $0.064 / $0.265) and GLM-4.7-FlashX (Z.ai (Zhipu), $0.07 / $0.40).