Model and API retirements

Within 30 days64Firm dates ahead558

64 within 30 days · 558 firm dates ahead

GPT-5.1-Codex-Max retirement date and replacement

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

Vendor page

Dates

Checked Nov 9, 2026 on GitHub's page
RetiredApr 1, 2026 (retired)
ReplacementLatest GPT Codex model
What it isGPT-5.1-Codex-Max stopped answering on GitHub Copilot.
Sourcedocs.github.com/en/copilot/reference/ai-models/supported-models

Changes

ReplacementUnverified

GitHub changed the replacement for GPT-5.1-Codex-Max from GPT-5.3-Codex to Latest GPT Codex model.

Oct 5Source

Around the same time on GitHub Copilot

GitHub
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