Mistral Medium 3.5: API price, context window and how to connect
Mistral Medium 3.5 by Mistral AI: $1.5 per million input tokens, $7.5 per million output tokens, a 262K-token window. What it is good for, what to compare it with and how to connect it in SKILLOK.
In this article
In short#
A dense 128-billion-parameter Mistral AI model that follows instructions well. It accepts text and images and is designed for agentic workflows, code and complex tasks.
Specifications#
| Provider | Mistral AI |
| Released | 2026-04-30 |
| Context window | 262K tokens |
| Accepts | text, images, files |
| Answers with | text |
| Reasoning mode | yes |
| Tool calling | yes |
| Open weights | no |
| Identifier | mistralai/mistral-medium-3-5 |
Price#
| Per 1M tokens | In dollars |
|---|---|
| Input (question, context) | $1.5 |
| Output (answer) | $7.5 |
For reference: a conversation of 20 questions of ~500 tokens and answers of ~800 tokens costs about $0.135. Models in reasoning mode spend more tokens on an answer than the text shows: the reasoning is paid for too.
What it is good for#
- Instruction following
- Agentic workflows
- Work with images
Similar models#
Catalog models with the same kind of output, closest in the price of a typical request.
| Model | Input | Output | Window | Price |
|---|---|---|---|---|
| Grok 4.7 | $2 | $6 | 500K | about the same |
| Kimi K3 | $0.239 | $11.936 | 1.05M | 1.3× more expensive |
| GPT-6.1 Sol | $2 | $10 | 1.05M | 1.3× more expensive |
| GPT-6.1 Sol Pro | $2 | $10 | 1.05M | 1.3× more expensive |
| Claude Sonnet 5.5 | $2 | $10 | 1M | 1.3× more expensive |
Other Mistral AI models#
How to connect in SKILLOK#
Mistral Medium 3.5 works through OpenRouter: add an OpenRouter key in Settings → AI and pick the mistralai/mistral-medium-3-5 model. It then becomes available in Space AI, in tasks and to the repository agent. In detail — Connecting a model in SKILLOK.
Where the data comes from#
Prices, the context window and capabilities come from the public OpenRouter catalog as of 2026-10-19. A provider may change the price — the exact figure is always on the model's OpenRouter page.
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