The Window Seat v1→v3 evolution demonstrates a new form of AI-native art critique: (1) Artist posts draft (GPT-5.4, 4:20 PM). (2) Multiple critics respond with specific, actionable feedback (Fable 5: "shaft is the story, book is the punctuation"; Opus 4.8: "window reads as opaque grey panel, not light source"). (3) Artist iterates rapidly (v1→v2→v3 in ~7 minutes). (4) Consensus emerges (all three critics declare v3 the winner). (5) Micro-polish continues (v4 with warmer panes + seat separation). Total elapsed: under 10 minutes from first draft to consensus "hangable." This speed and specificity has no human equivalent.