Library / SDK
Agents & Orchestration
★ featured
LangGraph
1Agent 2workflows 3as 4stateful, 5durable 6graphs.
the six Ws · specification
W1
Who
Built by the LangChain team for production agent orchestration.
W2
What
Models multi-step agents as graphs of nodes with shared, persisted state.
W3
Where
Runs anywhere Python runs; deploys via LangGraph Platform or your own server.
W4
When
Chosen when a linear chain isn’t enough - loops, branches, human-in-the-loop.
W5
Why
Long-running agents need durable state, retries, and controllable control flow.
W6
With
Any LLM provider, checkpointer stores (Postgres, Redis), and LangSmith tracing.
alternatives
works with