Mistral Medium 3.5
Mistral Medium 3.5 is a reasoning model from Mistral released on Apr 29, 2026. It reads text, images and files and writes text, with a 262K token context window and up to 262K tokens per reply.
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It costs $1.50 per million input tokens and $7.50 per million output tokens. Cached input bills at $0.15, 90% less than fresh input.
It supports tool calling, structured JSON output and prompt caching, and its weights are open, so you can host it yourself.
7 providers serve it, including Scaleway, Eden AI and Tempr Gateway.
- Modalities
- In / out price
- $1.50 / $7.50 per 1M
- Context
- 262K
- Max output
- 262K
- Released
- Apr 29, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Mistral Medium 3.5 pricing
USD, as listed on Oct 21, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $1.50 / 1M tokens | |
|---|---|---|
| Output | $7.50 / 1M tokens | |
| Cached input (read) | $0.15 / 1M tokens | 90% off input |
Mistral Medium 3.5 providers
7 providers serve it, including Scaleway, Eden AI and Tempr Gateway. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Mistral First party | $1.50 | $7.50 | $0.15 | 262K | 262K |
| Scaleway | $1.50 | $7.50 | n/a | 256K | 16K |
| Eden AI | $1.50 | $7.50 | $0.15 | 262K | 262K |
| Tempr Gateway | $1.50 | $7.50 | n/a | 262K | 262K |
| evroc | $1.73 | $6.90 | n/a | 262K | 262K |
| GreenPT | $2.05 | $10.26 | n/a | 262K | 16K |
| SAP AI Core | n/a | n/a | n/a | 262K | 262K |
What Mistral Medium 3.5 costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Mistral Medium 3.5 through an OpenAI compatible API.
- Tools
tools - Structured outputs
structured_outputs - Reasoning
reasoning - Temperature
temperature
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Mistral Medium 3.5 questions
How much does the Mistral Medium 3.5 API cost?
$1.50 per million input tokens and $7.50 per million output tokens, with cached input at $0.15. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Mistral Medium 3.5?
262,144 tokens of input, and it can write up to 262,144 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Mistral Medium 3.5?
7 providers serve it, including Scaleway, Eden AI and Tempr Gateway. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Mistral Medium 3.5 support tool calling?
Yes. It accepts tool definitions and can return JSON that matches a schema, which is what an agent needs to call your APIs.
Is Mistral Medium 3.5 open source?
Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.
When was Mistral Medium 3.5 released?
Apr 29, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 21, 2026. The summary is written from these facts.