Hidden Feature Suggests Apple May Let You Replace Siri With Claude or ChatGPT on iPhone and macOS

A hidden Extensions Framework found in iOS 27 and macOS Golden Gate lets users set a third-party AI model, such as Claude, as Siri's backend. The Model Delegation API lets third-party models work as a Siri extension, while Model Manager Services allows replacing Apple's server-side AI. The feature is not yet enabled for users.

• Extensions Framework lets users pick a third-party model for Siri in settings
• Model Delegation API lets Claude work as a Siri extension
• Model Manager Services can replace Apple's server-side AI with a third-party one
• Feature exists in iOS 27 and macOS Golden Gate but is not yet enabled