LangGraph

LangGraph adds durable, stateful graph execution on the LangChain ecosystem: nodes, edges, checkpoints, interrupts, and human-in-the-loop pauses. It is designed for agents that must branch, wait, and resume reliably. Among OSS options it is one of the closest analogues to propose → gate → execute loops. Compare against Temporal/Inngest when workflows must span services and languages; use LangGraph when the graph and Python worker lifetime are tightly coupled. Build resilient agents. Trusted by companies shaping the future of agents – including Klarna, Replit, Elastic, and more – LangGraph is a low-level orchestration framework for building, managing, and deploying long-running, stateful agents. [!TIP] If you're looking to quickly build agents, check out Deep Agents — a higher-level package built on LangGraph for agents that can plan, use subagents, and leverage file.