https://datatweets.com/courses/generative-ai/langchain-and-langgraph/Recent content in LangChain & LangGraph on DATATWEETSHugoenCopyright (c) 2025 DatatweetsSun, 28 Jun 2026 09:00:00 +0200https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-1-why-frameworks/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-1-why-frameworks/You’ve built chains, RAG, and agents by hand. Learn what LangChain and LangGraph provide as building blocks, see a working LangChain chain in a few lines, and learn when to reach for a framework and when not to.https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-2-langchain-basics/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-2-langchain-basics/Get hands-on with LangChain’s essentials: call the ChatAnthropic model, use prompt templates with variables, parse outputs to clean strings, and compose everything into a chain with the LCEL pipe operator.https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-3-rag-with-langchain/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-3-rag-with-langchain/Recreate the Module 7 RAG pipeline using LangChain in a fraction of the code: split a document with a text splitter, store it in a Chroma vector store with local embeddings, and compose a grounded retrieve-and-generate chain with the LCEL pipe.https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-4-agents-with-langgraph/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-4-agents-with-langgraph/The think-act-observe loop you wrote by hand is built into LangGraph. Define tools with @tool, spin up an agent with create_agent, read its message trajectory, and give it memory across turns with a checkpointer and a thread id.https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-5-guided-project-langgraph-agent/Fri, 14 Nov 2025 09:00:00 +0200https://datatweets.com/courses/generative-ai/langchain-and-langgraph/lesson-5-guided-project-langgraph-agent/The capstone: rebuild the Module 8 research assistant on LangGraph. Combine a retrieval tool over a Chroma vector store, a calculator, a planning system prompt, and checkpointer memory into an agent that plans, retrieves, computes, and answers multi-step questions from your docs.