Tech Ocean

Apr 25, 2026 · Artificial Intelligence

Building Multi‑Agent Systems Like Lego with LangGraph Subgraphs

This article explains why subgraphs are needed for complex tasks, shows how to define a subgraph as a node, use named channels for data flow, isolate namespaces, reuse compiled subgraphs, add checkpoints, and presents a complete multi‑agent orchestration example in Python using LangGraph.