LangGraph

Graph-based framework for building stateful, multi-actor LLM agent workflows.

LangGraph, from the LangChain team, models agent applications as directed graphs where nodes are agents, tools, or checkpoints and edges are (optionally conditional) transitions you define explicitly. Its persistence layer, checkpointing, and human-in-the-loop primitives map cleanly to production needs like audit trails and rollback points. LangGraph Platform adds hosted deployment, a visual studio, and long-running task management. It reached a v1.0 stability guarantee and overtook CrewAI in GitHub stars in early 2026.