Upcoming deprecation of selected GitHub Copilot models in mid-October

DeprecationSep 18, 2026VerifiedAdded Sep 22, 2026

We will deprecate the following models across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions) on October 19th, 2026: Model Deprecation date Suggested alternative Gemini 3.7 Flash 2026-10-19 Gemini 3.8 Flash GPT-5.5 2026-10-19 GPT-5.6 Sol GPT-5.4 2026-10-19 GPT-5.6 Sol GPT-5.4 mini 2026-10-19...

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Read GitHub's release notes

https://github.blog/changelog/2026-09-18-upcoming-deprecation-of-selected-github-copilot-models-in-mid-october

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