Four Core Agentic AI Design Patterns Developers and PMs Should Understand

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As AI jargon proliferates, a DEV Community breakdown identifies four foundational agentic design patterns cutting through the noise. The Pipeline pattern chains specialized AI nodes in sequence, enabling modular, swappable workflows for tasks like spec-driven development. The Router pattern uses a gatekeeper model to direct queries to the most suitable specialized agent, with a recommended human fallback when confidence drops below a set threshold. The Planner-Executor pattern separates high-level planning from parallel task execution, using expensive models for strategy and cheaper ones for implementation to control costs. Finally, the Adversarial Loop pits a Generator agent against a Critic agent to iteratively refine outputs against a defined quality rubric.

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