Model and API retirements

Within 30 days58Firm dates ahead544

58 within 30 days · 544 firm dates ahead

GPT-5.5 retirement date and replacement

GitHub Copilot · Model · retired Oct 19, 2026 (8 days ago)Unverified

Vendor page

Dates

Checked Oct 26, 2026 on GitHub's page
RetiredOct 19, 2026 (8 days ago)
ReplacementLatest GPT Sol model
What it isGPT-5.5 stopped answering on GitHub Copilot.
Sourcedocs.github.com/en/copilot/reference/ai-models/supported-models

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