Architecture and Beyond

Aug 30, 2026 · Artificial Intelligence

Agent Loop Termination: DeepSeek Harness vs Pi Architecture Deep Dive

This article compares how DeepSeek Harness and Pi determine when an agent loop ends, analyzing their multi-layer boundary models, state machines, turn/step debt tracking, stop hooks, tool conclusion semantics, cancellation handling, reason taxonomies, goal-driven outer loops, and the engineering trade-offs between a heavyweight event-sourced runtime and a lightweight embeddable kernel.