LangGraph Interactive Lab

Explore, test, and trace 14 different autonomous agent architectures. This interactive playground lets you see exactly how state flows, tools are executed, and LLMs reason in real-time.

14 Architectures

From simple prompt chains to multi-agent swarms and ReAct execution loops.

Live Execution

Watch graph state mutations and tool invocations happen step-by-step.

Note: The backend is hosted on a free Render instance and goes to sleep after inactivity. It takes about a minute to spin back up!