How to beginner · 3 min read

How to use Mistral for AI agents

Q: How to use Mistral for AI agents

Use the mistralai Python SDK or the OpenAI-compatible API to integrate Mistral models for AI agents. Instantiate the client with your API key, then call chat.complete with your chosen model and messages to get AI-generated responses.

Quick answer

Use the mistralai Python SDK or the OpenAI-compatible API to integrate Mistral models for AI agents. Instantiate the client with your API key, then call chat.complete with your chosen model and messages to get AI-generated responses.

PREREQUISITES

Python 3.8+
MISTRAL_API_KEY environment variable set
pip install mistralai or pip install openai>=1.0

Setup

Install the official mistralai Python SDK or use the OpenAI-compatible openai package with the Mistral API base URL. Set your API key in the MISTRAL_API_KEY environment variable.

bash

pip install mistralai

Step by step

This example shows how to create a simple AI agent using the mistralai SDK to send a chat completion request to the mistral-large-latest model.

python

import os
from mistralai import Mistral

client = Mistral(api_key=os.environ["MISTRAL_API_KEY"])

response = client.chat.complete(
    model="mistral-large-latest",
    messages=[{"role": "user", "content": "Explain the concept of AI agents."}]
)

print(response.choices[0].message.content)

output

AI agents are autonomous programs that perceive their environment, make decisions, and perform actions to achieve specific goals.

Common variations

You can also use the OpenAI-compatible openai Python SDK by setting the base_url to Mistral's API endpoint. For streaming responses, use the stream=True parameter. Different models like mistral-small-latest can be specified for lighter workloads.

python

import os
from openai import OpenAI

client = OpenAI(api_key=os.environ["MISTRAL_API_KEY"], base_url="https://api.mistral.ai/v1")

response = client.chat.completions.create(
    model="mistral-large-latest",
    messages=[{"role": "user", "content": "What are AI agents?"}],
    stream=False
)

print(response.choices[0].message.content)

output

AI agents are software entities that perceive their environment and act autonomously to accomplish tasks or goals.

Troubleshooting

If you get authentication errors, verify your MISTRAL_API_KEY is correctly set in your environment.
For network timeouts, check your internet connection and retry.
If the model name is invalid, confirm you are using a current Mistral model like mistral-large-latest.

✅

Key Takeaways

Use the official mistralai SDK or OpenAI-compatible openai client with Mistral's API base URL.
Set your API key securely in the MISTRAL_API_KEY environment variable before making requests.
Specify the model like mistral-large-latest and pass messages to chat.complete or chat.completions.create.
Streaming and async calls are supported via the OpenAI-compatible SDK with stream=True.
Check model names and API keys carefully to avoid common errors.

Verified 2026-04 · mistral-large-latest, mistral-small-latest

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