LangGraph
Build stateful, multi-step AI agents and workflows using a graph-based architecture.
LangGraph is LangChain's framework for building controllable, stateful AI agents using a directed graph model. Each node is a processing step (LLM call, tool use, human checkpoint); edges define the flow. This gives developers precise control over agent reasoning, branching logic, state persistence, and cycle-back loops — critical for reliable production agents.
Multi-AgentGraphPythonStateful
Published Feb 5, 2026