LangGraph 0.5 + Weaviate Agentic RAG 2026: Build It Right
Learn how LangGraph agentic RAG replaces single-shot retrieval with reasoning loops in 2026, using LangGraph 0.5 and Weaviate to build systems that actually...
Chapter 1: Why Agentic RAG Won in 2026: From Single-Shot Retrieval to Reasoning Loops For about three years, retrieval-augmented generation meant one thing: embed the user's question, run a vector search, stuff the top-k chunks into a prompt, and hope. That architecture shipped an enormous amount of software, and it deserves credit for making LLMs useful over private data. But by 2026 it is a legacy pattern, and the reason is not fashion. It is that single-shot retrieval has a structural ceiling, and every team that scaled past a demo hit it in the same place. This chapter is about...