GPT-4.1 retirement date and replacement

Name: GPT-4.1 retires (GitHub Copilot)
Start: 2026-06-01
End: 2026-06-01

GitHub Copilot · Model · retired Jun 1, 2026 (retired)Unverified

Dates

Checked Sep 25, 2026 on GitHub's page

Retired	Jun 1, 2026 (retired)
Replacement	GPT-5.5
Notice	Retirement date; Model retirement history
Source	docs.github.com/en/copilot/reference/ai-models/supported-models

Date	Change	Source
Sep 25	Announced2026-06-01UnverifiedRetirement date; Model retirement historySource	Source

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