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Build resilient agents.

★ 42K7,128 forksPythonMITlangchain-ai

LangGraph is a low-level Python orchestration framework for building stateful, long-running agents as graphs. It adds durable execution, checkpointing, human-in-the-loop interrupts, and memory, with optional LangSmith tracing and deployment.

Use Cases

build long-running stateful agentsmulti-agent orchestrationhuman-in-the-loop approval flowsdurable execution with automatic resume after failuresshort- and long-term agent memoryagent trajectory tracing and debuggingdeploying production agent systemssubgraph and branching workflow designtool-calling ReAct agentsstructured output agents

Built With

Language
Python
Frameworks
LangChain · LangSmith · Pydantic · Deep Agents · LangGraph.js

Tags

agents · multi-agent · orchestration · stateful-workflows · durable-execution · human-in-the-loop · memory · graph · python · langchain · observability · langsmith · checkpointing · workflow