GitHub Copilot model: GPT-5.4 mini

GitHub retired the GPT-5.4 mini model in Copilot on 19 October 2026; it suggests Latest GPT Luna model instead.

Retirement1 version

Facts

Microsoft id
gpt-5.4-mini
Products
GitHub Copilot
Model
GPT-5.4 mini
Release status
Retired
Retired
19 October 2026
Suggested alternative
Latest GPT Luna model
Status pages
GitHub Copilot status
First captured by us
(from our first import of this list)
Microsoft last modified
–
Source
GitHub Copilot models · open the original at Microsoft

Microsoft says

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What Microsoft changed

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  1. First version we captured ·

    The text as we first saw it

    Seen by us · Microsoft's page

Other changes for GitHub Copilot