Mistral Small 4
Summary
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.
Fast Mistral production model for chat, extraction, and cost-sensitive agents
Last verified 4 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Mistral AI |
|---|---|
| Release date | 16 Mar 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [models.dev] |
| Context window | 256K (256,000 tokens) [models.dev] |
| Max output | 256K tokens [models.dev] |
| Knowledge cutoff | Jun 2025 [models.dev] |
| Input | Text and images [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Hugging Face | mistralai/Mistral-Small-4-119B-2603 |
Mistral Small 4 API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Mistral API mistral-small-2603 | $0.15 | $0.60 | $0.01 | 256K | models.dev, 4 Oct 2026 |
| OpenRouter mistralai/mistral-small-2603 | $0.15 | $0.60 | $0.01 | 262K | OpenRouter, 4 Oct 2026 |
Frequently asked questions
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.
Change history
No changes detected since we started tracking this model. We re-check every source daily.