October 20, 2026
GitHub Copilot removes 6 models from most modes: GPT-5.4, Grok 4.5 and Gemini 3.7 Flash

From Oct 19, 6 models were removed from most Copilot modes: chat, inline edits, ask and agent modes, and autocomplete. Users can pick a replacement in the model selector, and admins can enable alternatives in Copilot policies.
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