Ministral 3 3B

by Mistral

Ministral 3 3B is the smallest model in Mistral's December 2025 Ministral 3 family, packing language capabilities into an ultra-compact 3-billion-parameter footprint built for edge deployment. With a 256k token context window and Apache 2.0 open-source licensing, it runs capable inference on consumer hardware and embedded systems. Designed for resource-constrained environments, Ministral 3 3B supports tool use, function calling, and structured outputs, enabling agent applications on single-GPU systems or CPU-only configurations. It runs on consumer-grade hardware and supports fully private, on-device deployment. As the smallest model in the family, Ministral 3 3B suits developers building responsive applications, embedded systems, and solutions that need offline capability. Its open-weight status and feature set make it a candidate for local customization and fine-tuning while staying compatible with modern agentic patterns.

Key info

Input
Output
Features
Context window
256K
Max output
8K
Input price
$0.10 /1M
Output price
$0.10 /1M
  • EU residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

Ministral 3 3B runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
EUEnterpriseNo$0.10$0.10

Uptime and availability

Ministral 3 3B runs on a single route through the Opper gateway today, so its availability is that provider's availability.

100%route uptime, last 30 days
Single route, no failover target within this model.

Name a second model in the same request and the gateway tries it on retriable errors, so a busy hour never has to reach your users. Set up a fallback chain.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.

Data handling per route

Each route hosting Ministral 3 3B has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Mistral β€” FranceπŸ‡«πŸ‡·

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 β€” data stays in EU

Get started

Call Ministral 3 3B through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” 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 a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "mistral/ministral-3b-2512",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Compare Ministral 3 3B with…

Side-by-side on privacy, EU hosting, pricing, and benchmarks.

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