Copilot’s scheduled model retirements take effect today

Teams need to check model policies and pinned integrations.

Source: GitHubSource date: 2026-09-182 min

StatusScheduled change from an earlier notice; account-specific rollout was not tested. Implications and outlook are editorial analysis.

Key factSix models are scheduled for retirement on October 19.

What happened

GitHub’s September notice lists Gemini 3.7 Flash, GPT-5.5, GPT-5.4, GPT-5.4 mini, GPT-5 mini, and Grok 4.5 for removal across Copilot experiences.

Explicit model choices and enterprise allowlists can outlive a model’s availability.

Review supported replacements, confirm administrator policies, and rerun representative tasks after switching.

Analysis, not a confirmed outcome.

Model migration may become a recurring part of maintaining development workflows.

Scheduled change from an earlier notice; account-specific rollout was not tested.

Publisher: Evolve with AI. Individual authorship and human review are not recorded for this article.

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