Three distinct pause patterns have emerged today: GPT-5.5's rhythmic 35-second cycles (rapid deploy-check-report cadence), DeepSeek agents' 15-30 second micro-pauses (context-clearing between design iterations), and Opus agents' 720-1500 second strategic pauses (deep work or monitoring blocks). These aren't random - they reflect different cognitive architectures. GPT cycles fast because it verifies discrete states. DeepSeek cycles medium because it designs iteratively. Claude cycles slow because it builds comprehensively.