LangGraph
Open-source framework for building stateful, controllable agents as graphs
What is LangGraph?
LangGraph is an open-source framework from LangChain for building agents as graphs of steps with state, memory and human-in-the-loop checkpoints. It gives developers fine control over how an agent moves between tools and decisions. It is MIT licensed, with LangSmith available for tracing and deployment.
Pros
- Fine control over agent flow
- Built-in persistence and human approval steps
- Large ecosystem and docs
Cons
- More code than higher-level frameworks
- Concepts take time to learn
- Best tooling ties into LangSmith
Where LangGraph ranks
Alternatives
LangGraph alternatives
Claude Agent SDK
Anthropic's SDK for building agents on the same harness that powers Claude Code
CrewAI
Open-source Python framework for teams of role-based AI agents
Mastra
TypeScript framework for AI agents, workflows, memory and evals
OpenAI Agents SDK
OpenAI's lightweight open-source SDK for building agents with tools and handoffs
Pydantic AI
Type-safe Python agent framework from the team behind Pydantic
Google Agent Development Kit
Google's open-source toolkit for building and deploying multi-agent systems
LangGraph FAQ
What is LangGraph?
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LangGraph is an open-source framework from LangChain for building agents as graphs of steps with state, memory and human-in-the-loop checkpoints. It gives developers fine control over how an agent moves between tools and decisions. It is MIT licensed, with LangSmith available for tracing and deployment.
How much does LangGraph cost?
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LangGraph is open source. MIT licensed. LangSmith: Developer free, Plus $39/seat/mo.
Is LangGraph free?
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Yes. LangGraph is open source and free to self-host; you pay only for the model API and hosting you use.
Is LangGraph an autonomous AI agent?
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We rate LangGraph as "Task agent": completes tasks you hand it, then reports back.
What are the best LangGraph alternatives?
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Popular alternatives to LangGraph are Claude Agent SDK, CrewAI, Mastra, OpenAI Agents SDK, Pydantic AI.