iOS 27 AI Extensions: Use Gemini and ChatGPT With Siri

iOS 27 ends OpenAI’s exclusive arrangement with Siri. Where iOS 18 through iOS 26 gave ChatGPT the only third-party slot, the iOS 27 Extensions framework is expected to open that seat to Google Gemini, Anthropic’s Claude, and potentially others. You’ll pick your preferred model in Settings and it will follow you across Siri queries and Writing Tools.

Before you read: This article was published before Apple’s WWDC 2026 keynote on June 8. The Extensions framework described here is based on reporting from Bloomberg and MacRumors, and has not been officially confirmed by Apple. This page will be updated after the keynote.

#Apple’s Reason for Opening Siri to Multiple AI Providers

Apple’s original ChatGPT deal in iOS 18 was a bridge, not a strategy. Siri couldn’t handle open-ended questions well, and ChatGPT could, so Apple built a handoff. Users had to explicitly consent each time the query left Apple’s ecosystem, with a dialog asking if they wanted to send the request to OpenAI. That consent step kept the boundary visible: you knew when Siri was deferring to an outside model.

That arrangement solved one problem while creating another: you had no choice. If you preferred Gemini’s responses, or trusted Anthropic’s privacy approach, or simply wanted a different model’s output style, you were stuck with ChatGPT or nothing.

Bloomberg’s Mark Gurman reported in March 2026 that Apple plans to expand that integration substantially, naming at least three providers expected at launch: Google Gemini, Anthropic’s Claude, and the existing ChatGPT arrangement. The goal, according to the report, is a framework that treats third-party AI models as selectable providers rather than a single emergency fallback.

#How Does the Extensions Framework Work?

According to Bloomberg’s reporting, the Extensions setting is expected to appear in Settings under Apple Intelligence and Siri. The section will list available providers, initially ChatGPT, Google Gemini, and Claude, with a radio-button style selection for your preferred provider.

When you ask Siri a question that exceeds Apple’s on-device model’s capability, instead of always routing to ChatGPT, Siri routes to whichever provider you’ve selected. The handoff dialog from iOS 26, the consent prompt asking if you want to send your query to OpenAI, is expected to carry over with your chosen provider’s name instead.

In our testing of the current ChatGPT integration in iOS 26, the handoff works smoothly for text-based questions but the switch is sometimes abrupt, you can tell when Siri has handed off because the response style changes. Whether iOS 27 unifies the visual experience across providers is something Apple will clarify at WWDC.

#AI Providers Expected in iOS 27 Extensions

Bloomberg’s March 2026 report confirms that at least 3 providers are expected at launch: Google Gemini and Anthropic’s Claude alongside the existing ChatGPT integration. Apple may announce additional providers at WWDC.

Here’s what each model brings:

Google Gemini: deep integration with Google Search, strong multimodal capabilities, and access to real-time web information. Gemini is already the default AI on Android through Google Assistant, and its integration with Google Workspace makes it particularly relevant for users who work in Gmail and Google Docs throughout the day.

Anthropic Claude: well-regarded for longer-form reasoning, careful answers to complex questions, and a stated focus on safety in model behavior. Claude is integrated into a wide range of productivity tools.

ChatGPT (OpenAI): the existing integration, well-known for broad capability across categories. The current integration supports both the free tier and ChatGPT Plus for users with a subscription.

When we tried Writing Tools in iOS 26 with the default Apple model, the results were consistent but conservative, always grammatically correct, always neutral in tone. The ability to switch to a model with a more distinctive style is a meaningful choice for users who draft a lot of text on iPhone.

#Extensions in Writing Tools

Writing Tools launched in iOS 18 as a system-level AI layer: select any text in any app, tap the pencil icon, and you can rewrite, summarize, or adjust tone. The model behind it has always been Apple’s own.

In iOS 27, you’ll reportedly be able to switch Writing Tools to use your preferred provider. Select Gemini and the rewrites use Gemini’s model; select Claude and they use Claude’s. The interface is unchanged, the button placement and editing flow are the same, but the model generating the output is different. For users who write frequently on iPhone, this means a preference you’ve set once follows you across every app that supports Writing Tools.

The models produce different output styles: Gemini tends toward direct, information-dense rewrites, Claude produces more conversational prose, and Apple’s own model is consistent but conservative.

Having the choice in Writing Tools is the kind of practical improvement that shows up every time you write on your phone. Your writing context, whether you’re drafting a client email or a personal note, benefits from a model that fits that register.

#Apple’s On-Device AI Remains the Foundation

The Extensions framework is additive, not a replacement.

Apple Intelligence’s core capabilities, notification summaries, priority inbox sorting, Clean Up in Photos, basic Proofreading, Visual Intelligence, continue to run on-device using Apple’s own models. These features work without a connection and without sending data to any third party.

The Extensions layer activates when you ask Siri something that needs more than the on-device model can handle, or when you explicitly configure Writing Tools to use a specific provider. Apple’s official Apple Intelligence page describes the on-device and Private Cloud Compute approach that will continue in iOS 27 regardless of which Extensions provider you choose.

For how Apple Intelligence stacks up against competing platforms, see our Apple Intelligence vs Windows Copilot guide.

#Extensions vs the Current ChatGPT Integration

Three meaningful differences are expected:

Choice: iOS 26 gives you one third-party option. iOS 27 gives you several. This sounds minor until you’ve wanted Gemini’s search integration or Claude’s writing style and had no way to get it inside Siri.

Scope: the current ChatGPT integration applies only to Siri queries. iOS 27’s Extensions are expected to also apply to Writing Tools, making your provider choice follow you across the system.

Default vs. emergency: current ChatGPT is positioned as a fallback Apple asks permission to use each time. The Extensions model suggests a set-and-forget preference rather than a per-query consent prompt. MacRumors reported in June 2026 that the Extensions preference persists across reboots and app updates, matching how default browser or email settings work today.

#Which iPhones Support Extensions in iOS 27?

Apple hasn’t confirmed hardware requirements for the Extensions framework. Since Extensions rely on a network connection rather than on-device computation, they may be available on a broader range of iOS 27-compatible devices than the on-device Apple Intelligence features. For beta timing and device rollout, see our iOS 27 beta release date guide.

For the full iOS 27 device compatibility picture, see our iOS 27 compatible iPhones guide. For the broader set of iOS 27 AI changes, see our iOS 27 AI features guide.

#Bottom Line

The Extensions framework turns Siri’s third-party AI integration from a single-partner arrangement into an open-choice system. The practical result is that your preferred AI model, whichever one you find most useful, can follow you through Siri queries and Writing Tools without needing to leave the Apple ecosystem to access it.

WWDC on June 8 will confirm which providers launch first and exactly how the Settings interface works. This article will be updated the same day Apple announces. For how the broader Siri redesign connects to this, see our iOS 27 Siri redesign guide.

#Frequently Asked Questions