Integrating FastAPI with LangChain

LangChain is a versatile interface for nearly any Large Language Model (LLM) that allows developers to create LLM applications and integrate them with external data sources and software workflows. It was launched in October 2022 and quickly became a top open source project on GitHub.

We will use LangChain and FastAPI to create an AI-powered assistant for an electronic goods store that provides recommendations and helps users.

We will set up a Retrieval-Augmented Generation (RAG) application, which involves empowering the model with personalized data to be trained. In this particular case, that would be a document of frequently asked questions.

This recipe will guide you through the process of integrating FastAPI with LangChain to create dynamic and interactive AI assistants that enhance the customer shopping experience.

Getting ready

Before starting the recipe, you will need a Cohere API key. If you don’t have it, you can check...