Apple iOS 27 Extensions : Siri becomes a multi-provider AI hub, Claude and Gemini replace ChatGPT
🔎 On June 8, 2026, Siri ceased to belong to OpenAI
Apple just did exactly what no one expected. Not a new proprietary model. Not a simple cosmetic update. At WWDC 2026, the company transformed Siri into an open platform, a hub capable of routing any request to any third-party AI model.
Claude, Gemini, Grok, Perplexity, Copilot, Meta AI, Alexa — all become options on the same level as ChatGPT in iOS 27. The monopoly that OpenAI held over the voice assistant on 2.5 billion devices just collapsed in a single keynote.
The irony is cruel for OpenAI: it is Apple, not a direct competitor, that destroyed their most valuable mobile distribution advantage. And this strategic maneuver is accompanied by a 30% cut on every AI subscription sold through the Extensions system.
The essentials
- Siri Extensions: iOS 27 opens Siri to all third-party AI models via a marketplace API. ChatGPT is no longer the default; it becomes just one option among others.
- Siri rebuilt on Gemini: Siri's understanding engine is rebuilt on a 1.2 trillion parameter Google Gemini model, executed via Apple Private Cloud Compute.
- SiriKit is dead: the legacy framework is formally deprecated. App Intents becomes the sole mandatory channel for any app-Siri interaction.
- 30% tax: Apple collects 30% of every AI subscription taken out via Extensions on its 2.5 billion active devices.
Recommended Tools
| AI Model | Siri Extensions Availability | Overall Score (June 2025) | Ideal for |
|---|---|---|---|
| Gemini 3.1 Pro | Initial partner, Siri engine | 92 | Complex queries, deep reasoning |
| Claude Opus 4.7 (Adaptive) | Initial partner | 90 | Long-form writing, nuanced analysis |
| GPT-5.5 (OpenAI) | Option (no longer the default) | 91 | Agentic tasks, automation |
| Grok 4.1 (xAI) | Available via Extensions | 90 | Real-time information, offbeat tone |
Siri Extensions: the end of the ChatGPT monopoly on iPhone
Siri Extensions is the name of the revolution. This system replaces the exclusive ChatGPT integration announced a year earlier with a true AI model marketplace.
The way it works is radically simple. The user asks Siri something. iOS 27 routes the request to the model selected by default, or asks which one to use if none is configured. The model responds. Siri displays the result.
ChatGPT is no longer the default model. It appears in the list, on the same level as Claude, Gemini, Grok, and the others. This loss of status is symbolically massive: being Siri's default AI engine was an unparalleled acquisition channel for OpenAI.
According to ZestLab, Google Gemini and Anthropic Claude are the confirmed initial partners, with deeper native integration than the other models. But the API is open: any provider can submit an extension.
MacLogin describes a multi-model matrix where the user can configure rules: this type of request goes to Claude, that one to Gemini, another to ChatGPT. This is intelligent routing directly at the OS level.
To understand the scale of the change, our comparison of the three leaders shows that each model excels in different areas. Apple has simply acknowledged this fact: a single model cannot do everything.
Siri rebuilt on Gemini 1.2T: the Google-Apple deal revealed
The real technical surprise is under the hood. Siri wasn't simply opened up to third parties. It has been rebuilt.
According to Lushbinary, the new Siri runs on a 1.2 trillion-parameter Google Gemini model, executed via Apple Private Cloud Compute. This means that Siri's natural language understanding layer — what turns your voice into an intent — is no longer an Apple model. It's a Google model.
Craig Federighi himself detailed this collaboration during a post-WWDC 2026 keynote tech talk, reports 9to5Mac. Apple's SVP of Software Engineering explained why Gemini: reasoning performance, ability to handle long context, and compatibility with Apple's Private Cloud Compute infrastructure.
This is a strategic masterstroke by Apple. The company avoids spending billions on training a proprietary model. It outsources the understanding layer to Google, while keeping control of distribution and the user interface. Apple remains the platform, not the provider.
Fello AI notes that this Google-Apple deal is likely the largest AI infrastructure contract in mobile history. Apple pays Google for the compute power, but takes a 30% cut on every AI subscription sold via Extensions. The economic model is inverted.
Mandatory App Intents: the forced migration devs dreaded
If Extensions is the visible side, App Intents is the hidden side. And it's going to hurt.
The deprecation of SiriKit is official: the legacy framework, which allowed apps to respond to Siri commands since 2016, is dead. App Intents replaces it as the sole channel of interaction between an app and Siri.
The difference is fundamental. SiriKit was limited to predefined domains (messages, calls, payments, etc.). App Intents is a generic system where each app declares its own actions, entities, and shortcuts in the form of structured Swift code.
TechTimes speaks of a migration "countdown clock". Apps that still use SiriKit will see their Siri integrations stop working. The deadline has not been publicly announced, but the pressure is clear.
For developers, the work is considerable. Every SiriKit integration must be rewritten in App Intents. And with the new Gemini-based Siri, the understanding of intents is radically different: the AI model understands natural language much better, which means apps must define their capabilities with more precision, not less.
Xcode 27 also integrates an on-device AI to help developers generate their App Intents automatically, reports Lushbinary. It's a welcome safety net, but the migration remains a massive undertaking for publishers of mature apps.
The multi-model matrix: how to choose between Claude, Gemini, and GPT
With Siri Extensions, the user faces a choice that didn't exist before. Which model to configure as the default? The answer depends on the use case.
Gemini 3.1 Pro, with its score of 92, is the best overall performing model. But it's also the one powering Siri's understanding layer, which creates a natural consistency if you also select it for responses. Our analysis of the three models details these differences.
Claude Opus 4.7 (Adaptive) excels at writing tasks and nuanced analysis. Its agentic score of 94.3 also makes it an excellent choice for complex workflows involving multiple steps. Anthropic was smart in becoming an initial partner: Claude benefits from a visibility that nothing else could buy it on iOS.
OpenAI's GPT-5.5 remains the agentic leader with 98.2. For automation tasks and multi-step workflows, it is technically the best. But it is no longer the default on Siri, which considerably reduces its exposure surface.
The configurable routing system allows for powerful scenarios. You can, for example, configure: logical reasoning to Gemini, writing to Claude, automation to GPT-5.5, and real-time information to Grok 4.1. It's a form of model routing accessible to the general public, something that previously only existed in developer tools.
The 30% tax: Apple's financial stroke of genius
The most underestimated aspect of the announcement is the money. ABHS calculated it: Apple collects 30% of every AI subscription sold through the Extensions system, across 2.5 billion active devices.
Let's take a concrete example. A user subscribes to Claude Pro at €20/month from Siri Extensions. Apple takes €6. Multiplied by millions of users, that's a colossal recurring revenue stream, without Apple training a single model.
It's the logical extension of the App Store model, applied to AI. Apple isn't doing AI. Apple is doing AI distribution. And distribution is what pays the most in the long run.
For AI providers, the calculation is complex. Refusing to participate in Extensions means disappearing from 2.5 billion devices. Accepting means giving 30% of every mobile subscription to Apple. None of them have a choice. Anthropic, Google, xAI, Perplexity — they will all sign.
OpenAI is in the most uncomfortable position. They were already losing money on every free ChatGPT user on iOS. Now, they also lose the exclusivity that justified that acquisition investment.
Impact on the ecosystem: what it changes for each player
For users
The change is immediate and concrete. You are no longer locked into ChatGPT when Siri doesn't know the answer. You choose the model that suits you, and you can change at any time.
The quality of responses will mechanically improve, because the right model will be used for the right task. Siri becomes a meta-assistant: it no longer answers itself, it orchestrates the best responders.
For app developers
The migration from SiriKit to App Intents is a direct cost. But the long-term benefit is real: with a Siri that truly understands natural language thanks to Gemini, app-Siri interactions will finally become reliable. No more systematic "I didn't understand."
Devs who migrate quickly will have an advantage: their apps will be among the first to work natively with the new Siri, which means more organic traffic via voice queries.
For AI providers
The market has just been reshuffled. Anthropic and Google gain a massive distribution channel. OpenAI loses one. xAI, Meta AI, Perplexity and the others are entering a space that was closed off to them.
The battle will shift towards differentiation in the Siri experience. A model that integrates better, responds faster, and handles multimodal context better will win users' preferences.
❌ Common mistakes
Mistake 1: Thinking Siri became intelligent by itself
No. Siri has not improved as a model. Apple replaced its understanding engine with Google's Gemini. The "magic" comes from Google, not Apple. Apple built the distribution platform, not the intelligence.
Mistake 2: Believing ChatGPT was removed from iOS
ChatGPT remains available via Siri Extensions. It simply lost its default model status and its exclusivity. The integration still exists, it has just become optional among other options.
Mistake 3: Delaying the migration from SiriKit to App Intents
This is the most dangerous mistake for developers. SiriKit is deprecated. Existing integrations will stop working. The migration is not optional, it's an active countdown. Start now.
Mistake 4: Considering Extensions as just a simple gadget
Siri Extensions redefines AI distribution on mobile. With 2.5 billion devices and a 30% tax, it's a massive new market. AI providers treating this as a secondary feature will lose years of advantage.
❓ Frequently asked questions
Does Siri really use Google Gemini internally?
Yes. According to the WWDC 2026 details, Siri's comprehension layer is rebuilt on a 1.2 trillion-parameter Gemini model, running within Apple Private Cloud Compute. Your data remains encrypted and is not stored by Google.
Is ChatGPT still available on iPhone?
Yes, via Siri Extensions like any other model. But it is no longer the default and no longer has exclusivity. The user must actively choose it or set it as their preferred model.
Which models are confirmed for Siri Extensions?
Google Gemini and Anthropic Claude are the initial confirmed partners. The system is open via API, so Grok, Perplexity, Copilot, Meta AI and others are expected soon.
Do I have to pay for each model separately?
It depends on the model. Some offer a free tier via Extensions, others require a subscription. Apple takes a 30% cut on every subscription sold through its system.
Will SiriKit stop working immediately?
No, but it is formally deprecated. Apple has not published an end date, but the migration to App Intents is described as urgent by WWDC 2026 sources.
✅ Conclusion
iOS 27 doesn't just update Siri: it dissolves it as a product to rebirth it as a platform. Apple has understood that the AI war is not won by training models, but by controlling distribution. With Siri Extensions, the company establishes itself as the ultimate gatekeeper of mobile AI — and takes a 30% cut in the process.
To trace the genesis of this shift, our detailed article on Siri Extensions covers every technical and strategic angle of this historic announcement.