Mastodawn

In this article, Vitalii Honchar explained how to build AI-powered apps that can chat with uploaded PDF files. He showed how to implement Retrieval Augmented Generation (RAG) using FastAPI for the API and LangChain to interact with OpenAI.

https://vitaliihonchar.com/insights/python-rag-api

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Python RAG API Tutorial with LangChain & FastAPI – Complete Guide

Learn how to build a Retrieval-Augmented Generation (RAG) PDF chat service using FastAPI, Postgres pgvector, and OpenAI API in this step-by-step tutorial.

Vitalii Honchar