Apple expands AI choice with third-party model support in iOS 27
Apple is preparing a big step toward more open, customizable AI on its devices. According to reports, the company will let certified third-party AI models — called "Extensions" — power Apple Intelligence features across iOS 27, iPadOS 27, and macOS 27. That means users could swap in their favorite chatbot or generative model to run system services like Siri, Writing Tools, and Image Playground.
This shift brings immediate benefits for users and developers. People gain real choice over how their device thinks and speaks: you’ll be able to choose a preferred model and even assign different Siri voices to different models, creating richer, more personalized assistants. For developers and AI teams, system-level integration opens a big new distribution channel and incentive to innovate.
The move also encourages healthy competition in the AI ecosystem. By allowing multiple models to compete on the same device, Apple can accelerate feature development, diversify capabilities (from specialized writing assistants to creative image tools), and surface more specialized or privacy-focused options for users.
Overall, giving users the power to pick and customize AI models at the OS level is a practical, user-focused win: it delivers immediate personalization, drives third-party innovation, and broadens the types of AI experiences available across millions of Apple devices.
- System-wide third-party model support increases choice and personalization.
- Different Siri voices per model enable clearer, more contextual interactions.
- New opportunities for developers to build and distribute specialized AI Extensions.