AI-Powered Local Document Chatbot using LangChain and HuggingFace

Discover how to build your own AI-powered Question Answering (QA) system that allows users to upload PDF and DOCX files and interactively ask questions. This blog walks you through a complete pipeline using LangChain, HuggingFace Transformers, and FAISS to enable semantic search and intelligent response generation — all running locally without relying on cloud APIs. Learn how to split documents into chunks, generate embeddings, build a vector store, and deploy a smart prompt-based chatbot using Python. Ideal for researchers, developers, and anyone seeking secure document-based AI solutions.