Programming & Software
GitHub Copilot Is Retiring These AI Models on October 19, 2026, Here's What to Switch To
Six Copilot models go dark on October 19, 2026, including GPT-5.5, GPT-5.4, Gemini 3.7 Flash and Grok 4.5, across Chat, agent mode, inline edits and completions. The official replacement map, what actually breaks, and a team migration checklist.