Mistral Medium 3.5
API ID mistral-medium-3-5
Mistral Medium 3.5 is a Mistral model, released April 2026. It has a 256,000-token context window. It takes image and PDF input and supports function calling, structured outputs and reasoning. Standard price: $1.50 input and $7.50 output per 1M tokens.
Our frontier-class multimodal model optimized for agentic and coding use cases. Released as open weights under a Modified MIT license.
- Status
- Active
- Released
- April 2026
- Shutdown
- none announced
- Replacement
- —
No deprecation or shutdown date has been announced as of October 15, 2026.
Benchmarks
Scores as each source published themComparing with Mistral Medium 3.1, the previous model in this line. A score is compared only with the same benchmark from the same source, at the same setting where both have it. Full comparison: prices, limits, features
Arena
| Arena | Mistral Medium 3.5 | Mistral Medium 3.1 | Change | Rank | Date | Source |
|---|---|---|---|---|---|---|
TextBy category
| 1427 ±6 | 1408 ±3 | +19 | 117 of 415 11,793 votes | Oct 13, 2026 | source |
| Text: Coding | 1478 ±11 | 1454 ±5 | +24 | 114 of 410 3,298 votes | Oct 13, 2026 | source |
| WebDev | 1263 ±15 | not rated | 126 of 142 2,320 votes | Oct 13, 2026 | source | |
| Vision | 1200 ±10 | 1159 ±6 | +41 | 91 of 165 5,375 votes | Oct 9, 2026 | source |
| Agent | -0.113 ±0.019 | not rated | 51 of 54 12,602 sessions | Oct 14, 2026 | source |
Rated as mistral-medium-3.5; Mistral Medium 3.1 as mistral-medium-2508. Text, WebDev and Vision ratings come from people voting between two anonymous answers; Text and Vision are style-controlled, as on arena.ai. Agent is Arena's separate score for real agent sessions, on its own scale. Data: Arena (arena.ai), CC BY 4.0.
Aliases pointing here: mistral-medium-latest (in place when tracking began (October 6, 2026))
Features
Compare models| Feature | Value | Since | Source |
|---|---|---|---|
| Structured outputsThe model can be held to a JSON schema you supply, so every reply parses without retries or cleanup. | Supported | in place when tracking began (October 6, 2026) | source |
| Function callingAlso called tool use. You describe functions; the model replies with a function name and arguments for your code to run, then uses the result. | Supported | in place when tracking began (October 6, 2026) | source |
| Batch APISend many requests as one job that runs in the background, usually finished within 24 hours, at a lower price than live requests. | Supported | in place when tracking began (October 6, 2026) | source |
| Image inputImages such as screenshots, photos and charts can go in the prompt for the model to read. | Supported | in place when tracking began (October 6, 2026) | source |
| PDF inputPDF files can go in the prompt directly, without converting them to text first. | Supported | in place when tracking began (October 6, 2026) | source |
| Reasoning / thinkingThe model can work through a problem step by step before it answers: usually better answers to hard questions, at the cost of more tokens and time. | Supported | in place when tracking began (October 6, 2026) | source |
| Context windowThe most the model can work with in one request, in tokens: your prompt, conversation history and files. A token is about three-quarters of an English word. | 256,000 tokens | in place when tracking began (October 6, 2026) | source |
Not published by Mistral: Prompt caching, Fine-tuning, Built-in web search, temperature parameter, top_p parameter, logprobs, Max output tokens.
Price history
USD per 1M tokens, standard tierWe started recording this model's prices on Oct 5, 2026. The history grows with each daily check.
Show as a table
| From | Type | Price |
|---|---|---|
| Oct 5, 2026 | Input | $1.50 |
| Oct 5, 2026 | Output | $7.50 |
Prices
USD per 1M tokens, every type and band, by tier| Type | Price $/1M | In effect |
|---|---|---|
| Standard | ||
| input | $1.50 | |
| output | $7.50 | |
Changelog
Changes we detected on Mistral's pagesNo changes recorded yet.
Email alerts
Get an email if mistral-medium-3-5 changes
We'll email you the same morning we spot a deprecation notice, a new or moved shutdown date, a price change, or the model leaving Mistral's model list.
No password: one email to confirm, and you can unsubscribe any time. Privacy
Last checked · Sources: Mistral models