A framework is not a finished assistant. Your team implements runtime, model access, permissions, tests and operational controls.
Documentation researched only. Pricing and eligibility vary by plan, region and workload; unresolved details are explicit. Performance has not been tested.
LangChain documents LangGraph as a low-level runtime for long-running stateful agents, including durable execution and human-in-the-loop support.
Documentation researched
Pricing: Open-source framework; model, hosting and LangSmith costs are separate
Best fit: Developers implementing stateful agent workflows.
Before choosing
Define success, the access you will grant, the approval points and how you will detect a failed task. A like-for-like decision needs those constraints before it needs a ranking.