In Xcode's Settings → Intelligence section, there's no built-in AI agent/model available, only chat bots. I'm not able to download a model through the Components section as well, but no models are offered or downloadable there either.
Environment:
- Xcode 26.6 and Xcode 27 beta 6
- macOS 26.6.2
- MacBook Pro (Apple M4 Pro)
The issue here is that the OS Setting "Apple Intelligence" must be turned on. Other requirements are a Silicon Mac and latest MacOS 26.
"Apple Intelligence must be turned on before launching Xcode to use coding intelligence features. (152533281)"
https://developer.apple.com/documentation/xcode-release-notes/xcode-26-release-notes