LangGraph
LangChain's low-level orchestration framework for stateful, controllable agents.
Sources and review
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Production agents that need controllable, stateful, graph-based orchestration.
You want a quick no-code start — expect real engineering investment.
About LangGraph
LangGraph is LangChain's open-source, low-level orchestration framework for long-running, stateful agents. It provides durable execution that resumes where it left off after failures, human-in-the-loop inspection and editing of agent state, short-term and long-term memory, and deployment infrastructure, with LangSmith for tracing. Deep Agents is a higher-level package built on it, and LangGraph.js covers JavaScript and TypeScript.
LangGraph is an open-source project written primarily in Python, with 42k stars on GitHub. It was last updated in September 2026.
pip install -U langgraph