GitHub Copilot lands in Xcode's built-in coding assistant as a public preview in Xcode 27.3 beta
All Copilot plans work; you need Xcode 27.3 beta on macOS Tahoe 26.6 or later and set it up under Xcode > Settings > Intelligence, while the separate Copilot for Xcode extension stays available. GitHub hasn't said which models or agent features are exposed or how usage is billed (9to5Mac).
