Mistral AI is a platform that offers hosting for their powerful open source models.

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Installation and Setup

A valid API key is needed to communicate with the API. You will also need the langchain-mistralai package: 
pip install langchain-mistralai

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Chat models

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ChatMistralAI

See a usage example. 
from langchain_mistralai.chat_models import ChatMistralAI

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Embedding models

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MistralAIEmbeddings

See a usage example. 
from langchain_mistralai import MistralAIEmbeddings