Mistral Medium 3 — Free API

Created by Mistral
mistral-ai/mistral-medium-3
🛠️ Function Calling ⚡ JSON Mode chat
Get API key → Save Key to Vault Test in Playground →

What is Mistral Medium 3?

Mistral Medium 3 by Mistral AI is a robust text-based LLM enabling developers to generate contextualized responses within 128k tokens, ideal for chat applications. It operates at ~1 RPS with no credit card required, ensuring OpenAI compatibility and free access.

Model ID
mistral-medium-3
Base URL
https://api.mistral.ai/v1

Mistral Medium 3 API Code Example

Paste your API key and run. See the config generator for Claude Code, Cursor, and more tools.

from openai import OpenAI

client = OpenAI(
    base_url="https://api.mistral.ai/v1",
    api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
    model="mistral-medium-3",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)
import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: "https://api.mistral.ai/v1",
  apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
  model: "mistral-medium-3",
  messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);
curl https://api.mistral.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "mistral-medium-3",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Other Free Models from Mistral AI

Mistral Medium 3.5 (128B)

256K ctx · No card

Mistral Small 4

256K ctx · No card

Mistral Large 3

256K ctx · No card

Mistral Nemo (12B)

128K ctx · No card

Codestral

256K ctx · No card

Pixtral Large

128K ctx · No card

More About Mistral AI

How to get an API key, rate limits, platform limitations, and tool configuration — everything you need to set up Mistral AI as a free LLM API backend.

View Mistral AI full guide →