Apple's next major OS update, expected this fall, could introduce a feature many users have been waiting for: the ability to choose which AI model powers system-wide Apple Intelligence features. According to Bloomberg's Mark Gurman, iOS 27, iPadOS 27, and macOS 27 will include a new "Extension" framework that allows third-party chatbots to replace Apple's own AI models for Siri, Writing Tools, and Image Playground.
How it works
Users will be able to install compatible AI apps from the App Store, then set their preferred model through the Settings app. Apple is already internally testing integrations with Google and Anthropic's AI models, according to Gurman. Currently, ChatGPT is the only third-party AI model integrated into Apple Intelligence; this change would open the door to multiple providers.
Each AI model can have its own Siri voice. For example, Siri responses from Apple's own model could use one voice, while an instance running on ChatGPT could use another. This is a detail that suggests Apple is thinking about how to make multiple AI models coexist without confusing the user.
What it means for users
For most people, the practical benefit is choice. If you prefer Google's Gemini for writing assistance or Anthropic's Claude for image generation, you could set that as your default. The feature also means that Apple Intelligence won't be locked to Apple's own models or a single partner. Users who want specialized capabilities—say, a model optimized for coding or creative writing—could switch to one that fits their workflow.
Tradeoffs
There are some unknowns. Apple has not confirmed pricing or whether third-party models will require separate subscriptions. The feature also depends on developers opting in by adding support through their App Store apps. It's not clear how many providers will participate at launch, or whether free tiers will be available.
Another consideration: privacy. Apple has marketed Apple Intelligence as processing data on-device where possible. Third-party models may not offer the same privacy guarantees. Users who care about data handling will need to check each provider's policy.
When to expect it
The update is expected to roll out this fall alongside the public releases of iOS 27, iPadOS 27, and macOS 27. Developers will likely get access to the Extension framework in the beta versions that precede the public release.
Bottom line
If this feature ships as described, it would give users real control over which AI model handles their daily tasks—something that has been missing from Apple Intelligence since its launch. The key question is how many providers will support it and whether the experience is seamless enough to justify the extra setup.