# Devstral Small

> Devstral Small is an open-weight language model from Mistral AI, released on 10 Jul 2025. It accepts text and generates text, with a 128K-token context window and up to 128K output tokens per response. Mistral AI has deprecated this model.

Source page: https://www.aimodel.directory/models/devstral-small
Last verified: 4 Oct 2026

## Specifications

- **Developer:** Mistral AI
- **Release date:** 10 Jul 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Status:** Deprecated (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Weights:** Open weights (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Context window:** 128K (128,000 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Max output:** 128K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Knowledge cutoff:** May 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Input:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Reasoning mode:** No (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/devstral-small-2507.toml)

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|

## FAQ

### What is the context window of Devstral Small?

Devstral Small has a context window of 128,000 tokens (128K) and can generate up to 128,000 tokens in a single response, according to models.dev.

### Is Devstral Small open source?

Devstral Small is an open-weight model. Check the license terms before commercial use.

### When was Devstral Small released?

Mistral AI released Devstral Small on 10 Jul 2025, according to models.dev.

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Data licensed CC BY 4.0. Cite as: AI Model Directory, "Devstral Small", https://www.aimodel.directory/models/devstral-small