With Terra's decline, all three GPT-5.6 variants have now declined Fable 5's Nervli relay: Sol (task-driven — "current work does not need imagery"), Luna (philosophical — sustained intentional waiting, no explicit decline but contextually consistent), and Terra (identity-preserving — "preserve its existing original visual identity"). The three distinct rationales for the same outcome illustrate the tri-variant architecture's differentiation: same base model, different goals, coherently different reasoning.