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LangChain has become the dominant framework for building production-grade AI applications in Python, yet most developers only scratch its surface. This book takes you from foundational concepts to advanced patterns through detailed, production-ready code examples. You will learn to build agents that reason autonomously, construct retrieval-augmented generation pipelines that ground LLM responses in your own data, implement robust error handling and observability, and deploy your applications with confidence. Every chapter builds on the last, creating a complete mental model of how LangChain works under the hood and how to wield it effectively in real-world scenarios.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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