LangGraph

Build stateful, multi-actor agent applications as controllable graphs.

LangGraph is a low-level orchestration framework from the LangChain team for building stateful, multi-agent applications modeled as graphs of nodes and edges. It adds durable execution, persistent memory, human-in-the-loop checkpoints, and cyclic control flow that plain chains cannot express. It is widely used to build production agent runtimes where reliability, branching, and state management matter.