Mistral Medium 3.5
Summary
Mistral Medium 3.5 is an open-weight language model from Mistral AI, released on 29 Apr 2026. It accepts text, images and PDFs and generates text, with a 262K-token context window and up to 262K output tokens per response. As of 21 Oct 2026, the lowest listed API price is $1.50 per million input tokens and $7.50 per million output tokens (Mistral API), across 1 provider we track.
Balanced Mistral model for enterprise assistants, multilingual work, and tools
Last verified 21 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Mistral AI |
|---|---|
| Release date | 29 Apr 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Open weights [models.dev] |
| Context window | 262K (262,144 tokens) [models.dev] |
| Max output | 262K tokens [models.dev] |
| Input | Text, images and PDFs [models.dev] |
| Output | Text [models.dev] |
| Reasoning mode | Yes [models.dev] |
| Tool calling | Yes [models.dev] |
| Structured output | Yes [models.dev] |
Mistral Medium 3.5 API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Mistral API mistral-medium-2604 | $1.50 | $7.50 | $0.15 | 262K | models.dev, 21 Oct 2026 |
Frequently asked questions
What is the context window of Mistral Medium 3.5?
Mistral Medium 3.5 has a context window of 262,144 tokens (262K) and can generate up to 262,144 tokens in a single response, according to models.dev.
How much does the Mistral Medium 3.5 API cost?
Through Mistral API, Mistral Medium 3.5 costs $1.50 per million input tokens and $7.50 per million output tokens. Prices last verified 21 Oct 2026.
Is Mistral Medium 3.5 open source?
Mistral Medium 3.5 is an open-weight model. Check the license terms before commercial use.
When was Mistral Medium 3.5 released?
Mistral AI released Mistral Medium 3.5 on 29 Apr 2026, according to models.dev.
Change history
- Added to the directory
- Now listed on Mistral API