Apple plans to let users choose their preferred AI model for Apple Intelligence features in iOS 27, iPadOS 27, and macOS 27.

According to Bloomberg's Mark Gurman, Apple is planning to allow third-party chatbots to power Apple Intelligence features system-wide in iOS 27, iPadOS 27, and macOS 27, all expected for this fall. Compatible third-party AI models, called "Extensions," will be able to run Siri, Writing Tools, and Image Playground.

Users will be able to choose their preferred AI model through the Settings app by installing a compatible AI app from the App Store. Apple will also allow users to select different Siri voices for different AI models—for example, one voice for Apple's AI model and another for an instance running ChatGPT.

Apple is already internally testing integrations with Google and Anthropic's AI models. So far, ChatGPT has been the only third-party AI model integrated into Apple Intelligence, though this may change.