Apple to let users select third-party AI models in iOS 27 via Extensions system

Apple plans to allow users to choose from multiple third-party AI models when performing generative AI tasks on their devices, according to Bloomberg's Mark Gurman. The feature will arrive in iOS 27, iPadOS 27, and macOS 27 through a system Apple internally calls Extensions.

How Extensions will work

Test versions of the software include a message explaining the system: "Extensions allow you to access generative AI capabilities from installed apps on demand, through Apple Intelligence features such as Siri, Writing Tools, Image Playground and more."

AI companies will need to opt in and add support through their App Store programs to become available as options for powering Apple's AI tools. The specific companies that will be supported at launch have not been disclosed.

Context for the strategy

This marks a departure from Apple's traditional walled garden approach. ChatGPT from OpenAI has been integrated into Apple Intelligence over the past few years, handling some generative AI tasks. Bloomberg reported in March 2026 that Apple's planned AI chatbot would support selecting from different AI models.

The strategy suggests Apple is prioritizing user flexibility over developing a proprietary model powerful enough to compete directly with existing chatbots. This follows multiple delays and false starts in the company's AI development efforts.

Timeline

The Extensions system is planned for the iOS 27, iPadOS 27, and macOS 27 releases. Apple has not announced specific release dates for these operating system versions.

What this means

Apple's approach represents a pragmatic pivot after struggling to develop competitive in-house AI capabilities. By creating a platform for third-party models rather than building a dominant proprietary system, Apple leverages its massive device install base and App Store distribution while outsourcing the computationally expensive work of training frontier models. The strategy could position Apple as an AI distribution layer rather than an AI development company—a significant shift for a firm known for vertical integration. The success depends entirely on which AI companies opt in and whether the integration provides a seamless enough experience to justify Apple's traditional premium positioning.