langchain-ai/langchain
The agent engineering platform.
Build production-ready LLM applications and advanced agents using Python, LangChain, and LangGraph. This is the companion repository for the book on generative AI with LangChain.
The agent engineering platform.
Build resilient agents.
The official code repository for the second edition of the O'Reilly book Generative Deep Learning: Teaching Machines to Paint, Write, Compose and Play.
Learn to build your Second Brain AI assistant with LLMs, agents, RAG, fine-tuning, LLMOps and AI systems techniques.
21 Lessons, Get Started Building with Generative AI
10 Weeks, 20 Lessons, Data Science for All!
2 captures since 2026-05-27