LangGraph
Open-source library from LangChain for building stateful agents as graphs.
- Supervision needed
- High Gives you control over each step, including human approval points, but you build and run all of it.
- Where it tends to fail
- State bugs, retries that repeat side effects, and complexity for small projects.
- Pricing
- Open-source library is free; LangSmith Developer free, Plus $39/seat/month. Pricing page (Checked Oct 2026)
- Website
- https://www.langchain.com/langgraph
The supervision level and failure notes are our editorial judgment from how these tools are built and used, not test results or ratings. Your setup may differ.