Copilot retires three models Nov 16

Action needed: three Copilot models retire Nov 16, 2026. Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra leave every Copilot experience. Move to Claude Opus 5.5 or GPT-6.1 Sol (or GPT-6 Luna) before your workflows find out the hard way. Individual annual plans keep Opus 4.8.