Apple’s Mac User Guide now lists individual switches for Apple Intelligence features and a separate Screen Time route for access controls. The page covers macOS 27, macOS Tahoe 26, and macOS Sequoia 15, but the supplied text does not confirm that every option behaves identically across versions.
For Siri AI (Beta), Apple’s current intelligent Siri experience, the guide says to open System Settings, select Siri, and choose Turn Off Siri. It also offers Siri Classic, Apple’s more traditional Siri mode, as an alternative after Siri is turned off. This distinction matters: switching interfaces is not presented as the same action as disabling Siri AI.
Other features are controlled inside the apps that use them. Messages has a Summarize Messages switch; Mail separates Summarize Message Previews from Personalize Smart Replies; Notifications has Summarize Notifications; Phone controls Suggestions in Voicemail; and Journal controls Get Writing Prompts. The guide also points to app-access settings for call context cards and suggestions shown by apps.
For restrictions, the guide sends readers to Screen Time’s Siri Restrictions settings, including separate guidance for a user’s own Mac and for a child’s device. That placement answers a practical question raised by the controls: turning a feature off is a personal setting, while Screen Time is the documented route for limiting access.
One important boundary remains: the page says macOS 27 availability varies by language and region and that usage limits may apply. It does not, in the supplied text, explain how much storage Apple Intelligence uses, whether disabling a feature removes its local models, or whether every listed switch is available on every Mac and operating-system version.