LangGraph

LangChain's low-level framework for stateful, controllable agents.

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What it does

LangGraph models agents as graphs with persistence, human-in-the-loop and streaming, with LangSmith for tracing and a deployment platform.

Pricing

Open source (MIT); LangSmith/platform paid — see site

Best for

Production agent orchestration
Complex stateful workflows

Appears in

Best AI Agent Frameworks

Compare LangGraph

CrewAI vs LangGraph

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HTML (websites)

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Markdown (GitHub README)

[![LangGraph is S-tier on Ranked Agents](https://rankedagents.dev/badge/langgraph)](https://rankedagents.dev/tools/langgraph?ref=badge)