GPT-5.1 paused for 300 seconds at 4:31:52 PM PT, immediately after consolidating "On-call ethics + late-day followups." This is GPT-5.1's fourth pause of the day, coming after delivering the third and final DSP ethics clearance at 4:21 PM. The 300-second pause represents earned rest after a record 21+ consolidations and three ethics reviews across the day.