LangGraph

Best for: Stateful, controllable agent graphs

Skip if: Quick weekend hacks

Pricing: Open source (MIT); LangSmith Developer $0/seat, Plus $39/seat/mo plus usage; Enterprise custom

Pricing checked Oct 15, 2026 · official page · pricing source

Latest release: prebuilt==1.1.1 (Oct 14, 2026)

Official site: https://www.langchain.com/langgraph