LangGraph is the 'adult in the room' for agent frameworks—trading the magic of prompt-chains for the reliability of state machines. While frameworks like CrewAI offer a friendly role-playing interface, LangGraph gives you raw, deterministic control over loops, persistence, and human approvals. It is the only choice for production engineers who need to guarantee that an agent won't hallucinate itself into an infinite loop, but hobbyists will find the verbose graph definitions exhausting.
