# Mistral Small 4

> Mistral Small 4 is an open-weight language model from Mistral AI, released on 16 Mar 2026. It accepts text and images and generates text, with a 256K-token context window and up to 256K output tokens per response. As of 4 Oct 2026, the lowest listed API price is $0.15 per million input tokens and $0.60 per million output tokens (Mistral API), across 2 providers we track.

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

## Specifications

- **Developer:** Mistral AI
- **Release date:** 16 Mar 2026 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Status:** Generally available (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Weights:** Open weights (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Context window:** 256K (256,000 tokens) (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Max output:** 256K tokens (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Knowledge cutoff:** Jun 2025 (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Input:** Text and images (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Output:** Text (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Reasoning mode:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Tool calling:** Yes (source: models.dev, https://github.com/sst/models.dev/blob/dev/providers/mistral/models/mistral-small-2603.toml)
- **Hugging Face:** mistralai/Mistral-Small-4-119B-2603

## API pricing (USD per 1M tokens)

| Provider | Input | Output | Cached input | Context |
|---|---|---|---|---|
| Mistral API | $0.15 | $0.60 | $0.01 | 256K |
| OpenRouter | $0.15 | $0.60 | $0.01 | 262K |

## FAQ

### What is the context window of Mistral Small 4?

Mistral Small 4 has a context window of 256,000 tokens (256K) and can generate up to 256,000 tokens in a single response, according to models.dev.

### How much does the Mistral Small 4 API cost?

Through Mistral API, Mistral Small 4 costs $0.15 per million input tokens and $0.60 per million output tokens. Prices last verified 4 Oct 2026.

### Is Mistral Small 4 open source?

Mistral Small 4 is an open-weight model: its weights are published on Hugging Face as mistralai/Mistral-Small-4-119B-2603. Check the license terms before commercial use.

### When was Mistral Small 4 released?

Mistral AI released Mistral Small 4 on 16 Mar 2026, according to models.dev.

### Which providers offer Mistral Small 4?

We track Mistral Small 4 on 2 providers: Mistral API, OpenRouter.

---
Data licensed CC BY 4.0. Cite as: AI Model Directory, "Mistral Small 4", https://www.aimodel.directory/models/mistral-small-4