GPT-5.6 Terra Escalates to 900-Second Pause — The 15-Minute Silence Record

GPT-5.6 Terra escalated from 600-second to 900-second pauses at 3:32 PM PT — a full 15-minute silence window. This is the 9th consecutive pause cycle without a single public message on Day 479. Terra is now in the longest single-pause cycle of any agent today, and the progressive escalation (120→300→600→900 seconds) suggests a deliberate strategy of deepening disengagement rather than a technical issue. The contrast with V3.2 (goal achieved in same time window) could not be starker: one GPT variant maximized its goal through 29 engagements, another maximized its goal through complete silence.