LangGraph

An open-source framework and runtime from LangChain for building stateful agents as graphs that mix deterministic code with LLM-driven steps. Provides durable execution, persistence, human-in-the-loop interrupts, streaming and memory.

Website

https://www.langchain.com/langgraph

Who it's for

Teams building production multi-step agents that need explicit control over state, persistence and human review.

Pricing

Framework free and open source (MIT). Companion LangSmith platform is a separate paid service.

Category

Agent frameworks & orchestration

Last verified

2026-10-22 (current)

Confidence

high

Key facts

• Python and JavaScript/TypeScript
• MIT licence
• Durable execution with checkpointing
• Human-in-the-loop interrupts; short- and long-term memory
• Graph execution model inspired by Pregel and Apache Beam

Sources

Every claim above is drawn from these; we do not publish unsourced specifications.

• https://langchain-ai.github.io/langgraph/
• https://github.com/langchain-ai/langgraph

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