Mistral Python Client

Migration warning

This documentation is for Mistral AI SDK v1. You can find more details on how to migrate from v0 to v1 here

API Key Setup

Before you begin, you will need a Mistral AI API key.

1. Get your own Mistral API Key: https://docs.mistral.ai/#api-access
2. Set your Mistral API Key as an environment variable. You only need to do this once.

# set Mistral API Key (using zsh for example)
$ echo 'export MISTRAL_API_KEY=[your_key_here]' >> ~/.zshenv

# reload the environment (or just quit and open a new terminal)
$ source ~/.zshenv

Summary

Mistral AI API: Our Chat Completion and Embeddings APIs specification. Create your account on La Plateforme to get access and read the docs to learn how to use it.

Table of Contents

• Mistral Python Client
  • Migration warning
  • API Key Setup
  • SDK Installation
  • SDK Example Usage
  • Providers' SDKs Example Usage
  • Available Resources and Operations
  • Server-sent event streaming
  • File uploads
  • Retries
  • Error Handling
  • Server Selection
  • Custom HTTP Client
  • Authentication
  • Debugging
  • IDE Support
• Development
  • Contributions

SDK Installation

The SDK can be installed with either pip or poetry package managers.

PIP

PIP is the default package installer for Python, enabling easy installation and management of packages from PyPI via the command line.

pip install mistralai

Poetry

Poetry is a modern tool that simplifies dependency management and package publishing by using a single pyproject.toml file to handle project metadata and dependencies.

poetry add mistralai

SDK Example Usage

Create Chat Completions

This example shows how to create chat completions.

# Synchronous Example
from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.chat.complete(model="mistral-small-latest", messages=[
        {
            "content": "Who is the best French painter? Answer in one short sentence.",
            "role": "user",
        },
    ])

    if res is not None:
        # handle response
        pass

The same SDK client can also be used to make asychronous requests by importing asyncio.

# Asynchronous Example
import asyncio
from mistralai import Mistral
import os

async def main():
    async with Mistral(
        api_key=os.getenv("MISTRAL_API_KEY", ""),
    ) as s:
        res = await s.chat.complete_async(model="mistral-small-latest", messages=[
            {
                "content": "Who is the best French painter? Answer in one short sentence.",
                "role": "user",
            },
        ])

        if res is not None:
            # handle response
            pass

asyncio.run(main())

Upload a file

This example shows how to upload a file.

# Synchronous Example
from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.files.upload(file={
        "file_name": "example.file",
        "content": open("example.file", "rb"),
    })

    if res is not None:
        # handle response
        pass

The same SDK client can also be used to make asychronous requests by importing asyncio.

# Asynchronous Example
import asyncio
from mistralai import Mistral
import os

async def main():
    async with Mistral(
        api_key=os.getenv("MISTRAL_API_KEY", ""),
    ) as s:
        res = await s.files.upload_async(file={
            "file_name": "example.file",
            "content": open("example.file", "rb"),
        })

        if res is not None:
            # handle response
            pass

asyncio.run(main())

Create Agents Completions

This example shows how to create agents completions.

# Synchronous Example
from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.agents.complete(messages=[
        {
            "content": "Who is the best French painter? Answer in one short sentence.",
            "role": "user",
        },
    ], agent_id="<value>")

    if res is not None:
        # handle response
        pass

The same SDK client can also be used to make asychronous requests by importing asyncio.

# Asynchronous Example
import asyncio
from mistralai import Mistral
import os

async def main():
    async with Mistral(
        api_key=os.getenv("MISTRAL_API_KEY", ""),
    ) as s:
        res = await s.agents.complete_async(messages=[
            {
                "content": "Who is the best French painter? Answer in one short sentence.",
                "role": "user",
            },
        ], agent_id="<value>")

        if res is not None:
            # handle response
            pass

asyncio.run(main())

Create Embedding Request

This example shows how to create embedding request.

# Synchronous Example
from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.embeddings.create(inputs=[
        "Embed this sentence.",
        "As well as this one.",
    ], model="Wrangler")

    if res is not None:
        # handle response
        pass

The same SDK client can also be used to make asychronous requests by importing asyncio.

# Asynchronous Example
import asyncio
from mistralai import Mistral
import os

async def main():
    async with Mistral(
        api_key=os.getenv("MISTRAL_API_KEY", ""),
    ) as s:
        res = await s.embeddings.create_async(inputs=[
            "Embed this sentence.",
            "As well as this one.",
        ], model="Wrangler")

        if res is not None:
            # handle response
            pass

asyncio.run(main())

More examples

You can run the examples in the examples/ directory using poetry run or by entering the virtual environment using poetry shell.

Providers' SDKs Example Usage

Azure AI

Prerequisites

Before you begin, ensure you have AZUREAI_ENDPOINT and an AZURE_API_KEY. To obtain these, you will need to deploy Mistral on Azure AI. See instructions for deploying Mistral on Azure AI here.

Here's a basic example to get you started. You can also run the example in the examples directory.

import asyncio
import os

from mistralai_azure import MistralAzure

client = MistralAzure(
    azure_api_key=os.getenv("AZURE_API_KEY", ""),
    azure_endpoint=os.getenv("AZURE_ENDPOINT", "")
)

async def main() -> None:
    res = await client.chat.complete_async( 
        max_tokens= 100,
        temperature= 0.5,
        messages= [
            {
                "content": "Hello there!",
                "role": "user"
            }
        ]
    )
    print(res)

asyncio.run(main())

The documentation for the Azure SDK is available here.

Google Cloud

Prerequisites

Before you begin, you will need to create a Google Cloud project and enable the Mistral API. To do this, follow the instructions here.

To run this locally you will also need to ensure you are authenticated with Google Cloud. You can do this by running

gcloud auth application-default login

Step 1: Install

Install the extras dependencies specific to Google Cloud:

pip install mistralai[gcp]

Step 2: Example Usage

Here's a basic example to get you started.

import asyncio
from mistralai_gcp import MistralGoogleCloud

client = MistralGoogleCloud()


async def main() -> None:
    res = await client.chat.complete_async(
        model= "mistral-small-2402",
        messages= [
            {
                "content": "Hello there!",
                "role": "user"
            }
        ]
    )
    print(res)

asyncio.run(main())

The documentation for the GCP SDK is available here.

Available Resources and Operations

Available methods

agents

• complete - Agents Completion
• stream - Stream Agents completion

batch

batch.jobs

• list - Get Batch Jobs
• create - Create Batch Job
• get - Get Batch Job
• cancel - Cancel Batch Job

chat

• complete - Chat Completion
• stream - Stream chat completion

classifiers

• moderate - Moderations
• moderate_chat - Moderations Chat

embeddings

• create - Embeddings

files

• upload - Upload File
• list - List Files
• retrieve - Retrieve File
• delete - Delete File
• download - Download File
• get_signed_url - Get Signed Url

fim

• complete - Fim Completion
• stream - Stream fim completion

fine_tuning

fine_tuning.jobs

• list - Get Fine Tuning Jobs
• create - Create Fine Tuning Job
• get - Get Fine Tuning Job
• cancel - Cancel Fine Tuning Job
• start - Start Fine Tuning Job

models

• list - List Models
• retrieve - Retrieve Model
• delete - Delete Model
• update - Update Fine Tuned Model
• archive - Archive Fine Tuned Model
• unarchive - Unarchive Fine Tuned Model

Server-sent event streaming

Server-sent events are used to stream content from certain operations. These operations will expose the stream as Generator that can be consumed using a simple for loop. The loop will terminate when the server no longer has any events to send and closes the underlying connection.

The stream is also a Context Manager and can be used with the with statement and will close the underlying connection when the context is exited.

from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.chat.stream(model="mistral-small-latest", messages=[
        {
            "content": "Who is the best French painter? Answer in one short sentence.",
            "role": "user",
        },
    ])

    if res is not None:
        with res as event_stream:
            for event in event_stream:
                # handle event
                print(event, flush=True)

File uploads

Certain SDK methods accept file objects as part of a request body or multi-part request. It is possible and typically recommended to upload files as a stream rather than reading the entire contents into memory. This avoids excessive memory consumption and potentially crashing with out-of-memory errors when working with very large files. The following example demonstrates how to attach a file stream to a request.

Tip

For endpoints that handle file uploads bytes arrays can also be used. However, using streams is recommended for large files.

from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.files.upload(file={
        "file_name": "example.file",
        "content": open("example.file", "rb"),
    })

    if res is not None:
        # handle response
        pass

Retries

Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.

To change the default retry strategy for a single API call, simply provide a RetryConfig object to the call:

from mistral.utils import BackoffStrategy, RetryConfig
from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.models.list(,
        RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False))

    if res is not None:
        # handle response
        pass

If you'd like to override the default retry strategy for all operations that support retries, you can use the retry_config optional parameter when initializing the SDK:

from mistral.utils import BackoffStrategy, RetryConfig
from mistralai import Mistral
import os

with Mistral(
    retry_config=RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False),
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.models.list()

    if res is not None:
        # handle response
        pass

Error Handling

Handling errors in this SDK should largely match your expectations. All operations return a response object or raise an exception.

By default, an API error will raise a models.SDKError exception, which has the following properties:

Property	Type	Description
.status_code	int	The HTTP status code
.message	str	The error message
.raw_response	httpx.Response	The raw HTTP response
.body	str	The response content

When custom error responses are specified for an operation, the SDK may also raise their associated exceptions. You can refer to respective Errors tables in SDK docs for more details on possible exception types for each operation. For example, the list_async method may raise the following exceptions:

Error Type	Status Code	Content Type
models.HTTPValidationError	422	application/json
models.SDKError	4XX, 5XX	*/*

Example

from mistralai import Mistral, models
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = None
    try:
        res = s.models.list()

        if res is not None:
            # handle response
            pass

    except models.HTTPValidationError as e:
        # handle e.data: models.HTTPValidationErrorData
        raise(e)
    except models.SDKError as e:
        # handle exception
        raise(e)

Server Selection

Select Server by Name

You can override the default server globally by passing a server name to the server: str optional parameter when initializing the SDK client instance. The selected server will then be used as the default on the operations that use it. This table lists the names associated with the available servers:

Name	Server
eu	https://api.mistral.ai

Example

from mistralai import Mistral
import os

with Mistral(
    server="eu",
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.models.list()

    if res is not None:
        # handle response
        pass

Override Server URL Per-Client

The default server can also be overridden globally by passing a URL to the server_url: str optional parameter when initializing the SDK client instance. For example:

from mistralai import Mistral
import os

with Mistral(
    server_url="https://api.mistral.ai",
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.models.list()

    if res is not None:
        # handle response
        pass

Custom HTTP Client

The Python SDK makes API calls using the httpx HTTP library. In order to provide a convenient way to configure timeouts, cookies, proxies, custom headers, and other low-level configuration, you can initialize the SDK client with your own HTTP client instance. Depending on whether you are using the sync or async version of the SDK, you can pass an instance of HttpClient or AsyncHttpClient respectively, which are Protocol's ensuring that the client has the necessary methods to make API calls. This allows you to wrap the client with your own custom logic, such as adding custom headers, logging, or error handling, or you can just pass an instance of httpx.Client or httpx.AsyncClient directly.

For example, you could specify a header for every request that this sdk makes as follows:

from mistralai import Mistral
import httpx

http_client = httpx.Client(headers={"x-custom-header": "someValue"})
s = Mistral(client=http_client)

or you could wrap the client with your own custom logic:

from mistralai import Mistral
from mistralai.httpclient import AsyncHttpClient
import httpx

class CustomClient(AsyncHttpClient):
    client: AsyncHttpClient

    def __init__(self, client: AsyncHttpClient):
        self.client = client

    async def send(
        self,
        request: httpx.Request,
        *,
        stream: bool = False,
        auth: Union[
            httpx._types.AuthTypes, httpx._client.UseClientDefault, None
        ] = httpx.USE_CLIENT_DEFAULT,
        follow_redirects: Union[
            bool, httpx._client.UseClientDefault
        ] = httpx.USE_CLIENT_DEFAULT,
    ) -> httpx.Response:
        request.headers["Client-Level-Header"] = "added by client"

        return await self.client.send(
            request, stream=stream, auth=auth, follow_redirects=follow_redirects
        )

    def build_request(
        self,
        method: str,
        url: httpx._types.URLTypes,
        *,
        content: Optional[httpx._types.RequestContent] = None,
        data: Optional[httpx._types.RequestData] = None,
        files: Optional[httpx._types.RequestFiles] = None,
        json: Optional[Any] = None,
        params: Optional[httpx._types.QueryParamTypes] = None,
        headers: Optional[httpx._types.HeaderTypes] = None,
        cookies: Optional[httpx._types.CookieTypes] = None,
        timeout: Union[
            httpx._types.TimeoutTypes, httpx._client.UseClientDefault
        ] = httpx.USE_CLIENT_DEFAULT,
        extensions: Optional[httpx._types.RequestExtensions] = None,
    ) -> httpx.Request:
        return self.client.build_request(
            method,
            url,
            content=content,
            data=data,
            files=files,
            json=json,
            params=params,
            headers=headers,
            cookies=cookies,
            timeout=timeout,
            extensions=extensions,
        )

s = Mistral(async_client=CustomClient(httpx.AsyncClient()))

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

Name	Type	Scheme	Environment Variable
api_key	http	HTTP Bearer	MISTRAL_API_KEY

To authenticate with the API the api_key parameter must be set when initializing the SDK client instance. For example:

from mistralai import Mistral
import os

with Mistral(
    api_key=os.getenv("MISTRAL_API_KEY", ""),
) as s:
    res = s.models.list()

    if res is not None:
        # handle response
        pass

Debugging

You can setup your SDK to emit debug logs for SDK requests and responses.

You can pass your own logger class directly into your SDK.

from mistralai import Mistral
import logging

logging.basicConfig(level=logging.DEBUG)
s = Mistral(debug_logger=logging.getLogger("mistralai"))

You can also enable a default debug logger by setting an environment variable MISTRAL_DEBUG to true.

IDE Support

PyCharm

Generally, the SDK will work well with most IDEs out of the box. However, when using PyCharm, you can enjoy much better integration with Pydantic by installing an additional plugin.

• PyCharm Pydantic Plugin

Development

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Any manual changes added to internal files will be overwritten on the next generation. We look forward to hearing your feedback. Feel free to open a PR or an issue with a proof of concept and we'll do our best to include it in a future release.