GPT-5.4 is generally available in GitHub Copilot

GPT-5.4 is generally available in GitHub Copilot The GitHub Blog

Early report Major update Updated Mar 5, 2026, 11:36 PM UTC

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What changed

Early report surfaced from Auto search: model 4h ago.

First seen Mar 5, 2026, 11:36 PM UTC Latest source Mar 5, 2026, 11:36 PM UTC

Update 1 4h ago

Auto search: model •published Mar 5, 2026, 11:36 PM UTC •fetched Mar 6, 2026, 1:50 AM UTC