LangGraph

LangGraph is a framework and platform from LangChain for building controllable, stateful AI agents and long-running workflows. It helps developers create agent systems that can plan, use tools, maintain state, pause for human review, recover from errors, and execute multi-step processes more reliably than simple chat loops. The tool is useful for founders and SaaS builders creating production agents, internal copilots, support automation, research assistants, coding workflows, and business process automation. Instead of building every orchestration layer manually, developers can use LangGraph to model stateful workflows and coordinate agents with clearer control. LangGraph fits closely with the LangChain ecosystem and can be used with LangSmith for tracing and evaluation. The broader platform includes Studio, Server, CLI, and deployment options for teams moving from local development to production-grade agent systems. For FutureStack, LangGraph belongs in AI Agents because it is one of the most important developer tools for building serious agent workflows. It is best for technical founders and developers who need controllable, inspectable, and durable agent behavior in real products.