LangGraph — LangChain's graph-based agent framework — is the tool marketing engineering teams reach for when they're done with ad-hoc scripts and want something they can actually run in production for a year without babysitting it.
Why state machines beat loose agents
Patterns that pay off
- Long-running research agents that checkpoint and resume.
- Multi-agent review workflows where the handoffs need to be deterministic.
- Human-in-the-loop approvals wired directly into the graph.
Production agents aren't smart loops. They're boring, debuggable state machines. LangGraph is the first framework that takes that seriously.
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