Does Mistral Medium 3.1 support zero data retention?

Not self-serve on Pay-as-you-go. Zero data retention for Mistral Medium 3.1 is available on request via Opper Enterprise — contact hello@opper.ai.

Where is Mistral Medium 3.1 hosted?

Mistral Medium 3.1 runs on EU hosting routes through the Opper gateway, with contractually enforced residency on supported providers.

Is Mistral Medium 3.1 trained on prompts and outputs?

No. Every hosting route for Mistral Medium 3.1 is configured so customer prompts and outputs are not used to train models by default.

Is a GDPR DPA available for Mistral Medium 3.1?

Yes. A GDPR Data Processing Agreement is available on at least one route serving Mistral Medium 3.1. Contact hello@opper.ai to receive it.

Mistral Medium 3.1

by Mistral

Mistral Medium 3.1 is Mistral's frontier-class multimodal model, released August 2025 to lead professional use cases including coding, document understanding, and agentic workflows. It supports text, vision, function calling, and structured outputs across a 128k token context window. The model balances performance with efficiency, making it suitable for production systems that reason over documents and mixed-modality input. Support for agent orchestration and structured outputs makes it a versatile choice for full-stack AI applications. The model is scheduled for deprecation on May 22, 2026, with Mistral Medium 3.5 as its successor.

Open in playground Try in chat Compare

Key info

Input

Output

Features

Context window

128K

Max output

Input price

$0.40 /1M

Output price

$2.00 /1M

EU residency available
Zero data retention via Enterprise
No training by default
GDPR DPA available

Available routes

Mistral Medium 3.1 runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.

Provider	Region	Zero data retention	Training	Input	Output
Mistral	EU	Enterprise	No	$0.40	$2.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting Mistral Medium 3.1 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Mistral — France🇫🇷

Zero data retention is available via Opper Enterprise contract. No training on customer data. EU; DPA available.

Zero data retention: Available via Opper Enterprise contract.
Training: No training on customer data.
Logging: Abuse monitoring (30-day retention)
Third-party access: Provider may share with subprocessors / partners
GDPR DPA: DPA available
Transfer mechanism: Not applicable — data stays in EU

Get started

Call Mistral Medium 3.1 through the Opper gateway with one API key. Let your coding agent set it up, or call it directly — Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent — Claude Code, Cursor, Codex, and more — and it'll wire up Opper for you.

Or call it directly

1import OpenAI from "openai";
2
3const client = new OpenAI({
4  apiKey: process.env.OPPER_API_KEY,
5  baseURL: "https://api.opper.ai/v3/compat",
6});
7
8const completion = await client.chat.completions.create({
9  model: "mistral/mistral-medium-2508",
10  messages: [{ role: "user", content: "Hello" }],
11});
12console.log(completion.choices[0].message.content);