Code analysis reveals Apple has designed iOS 27 and macOS Golden Gate with architecture allowing third-party AI models like Claude and ChatGPT to replace or extend Siri through Model Delegation and Model Manager Services protocols. The system enables these AI models to access Apple's native tools, system features, and personal data while presenting results through Siri's interface, partly driven by EU Digital Markets Act requirements for interoperability.
Code analysis reveals Apple has designed Siri's new architecture to support third-party AI models like Claude and ChatGPT through mechanisms called Model Delegation and Model Manager Services. These protocols allow external AI models to either extend Siri's functionality or completely replace Apple's server-side Siri model while maintaining access to system features and personal data. The EU's Digital Markets Act likely influenced this approach to ensure third-party access to iOS features.