
Google ADK v2.0 Alpha: Graph-Based Workflows Change the Game
Google shipped ADK v2.0.0a1 on March 18, 2026, and the headline feature is a graph-based workflow runtime that puts it in direct competition with LangGraph. The new Workflow class lets you define execution graphs with conditional routing, parallel fan-out/fan-in via JoinNode, loops, retry logic, human-in-the-loop steps, and nested workflows. Combined with a new Task API for structured agent delegation, ADK v2 closes the biggest gap critics pointed to: lack of fine-grained workflow control.








