Chatbot Builders with GPT API, LangChain, and RAG

Build intelligent chatbots that don’t just talk — they understand, retrieve, and reason.
In this hands-on guide, you’ll learn to create powerful AI assistants using the GPT API, LangChain, and Retrieval-Augmented Generation (RAG). Whether you’re a developer, a tech lead, or an automation enthusiast, this book will take you step-by-step through building chatbots that respond with context, use your own documents, and minimize hallucinations.
Inside, you'll discover how to:

• Connect to the GPT API and build conversational flows
• Chain prompts, tools, memory, and external data using LangChain
• Create RAG pipelines that pull real-time, factual content
• Implement document loaders, chunkers, and vector stores
• Add memory, agents, and tool integration for dynamic conversations
• Optimize prompts, reduce hallucination, and debug effectively

With detailed code examples, architecture diagrams, and a complete capstone project, this book is ideal for software developers and engineers looking to go beyond simple chatbot templates and build truly intelligent, business-ready AI agents.
If you're tired of generic bots and want real control, this guide is your blueprint.