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Siri with third-party AI in iOS 27: what choosing ChatGPT or Claude by default would mean

What if Siri stopped being a single assistant and became a front end for whichever AI model you prefer? That is the scenario described in a leak reported by CNET, based on an unofficial iOS 27 and macOS Golden Gate build. Apple, OpenAI and Anthropic have not confirmed any of it, so treat this as unverified reporting rather than an official roadmap.

What the leak actually describes

According to the source, iOS 27 and macOS Golden Gate would integrate Claude models through a model-delegation feature. In a video posted by the leaker, Siri hands a request to Claude to create a reminder in the Reminders app. Claude would then act as the on-device AI, with Siri serving as an intermediary.

The division of labor would work like this: requests that need Apple's proprietary system information would still be handled by Siri AI, while other tasks would go to the third-party model. A deeper extension would reportedly allow the Siri AI model to be replaced entirely by another LLM.

The leaker claims to have run GPT-5.6 with Siri login credentials, through Siri's interface and voice. The video reportedly shows that model searching emails, extracting information and sending messages via iMessage. A sensitive point: this data, normally filtered by Siri AI, could be logged in OpenAI's web interface, according to the source. CNET also notes that Siri was previously integrated with certain ChatGPT models.

Why the DMA is central here

The source says Apple is probably not opening up to third-party AI voluntarily. The EU's Digital Markets Act requires large platforms to give third-party developers equal access to certain hardware and software features. The DMA has specifically targeted Siri AI and Google's Gemini, according to the source.

For users in Europe, the stakes are twofold: what the leak describes may first apply in the EU, yet the source does not detail how the DMA would apply in practice. Availability dates and the real scope of these integrations are not established. It is also possible that these frameworks exist only in a development build and disappear before release.

ChatGPT or Claude: how to choose

If such a choice became real, it would not be about a universally "best" model but about your use case. Here are useful criteria, independent of the leak's unverified claims.

1. The nature of your tasks

Writing, summarizing, rewriting, coding or reasoning over long documents: models have different strengths. The right move is to test your actual use cases, not generic demos.

2. Data handling

This is the most important criterion for an assistant that can access emails, messages and reminders. The leak mentions possible logging of system data in OpenAI's web interface. Before enabling a third-party model, check privacy settings, whether data is used for training, and deletion options. A slightly less capable model with better data practices may be the better choice.

3. Integration with Apple features

If Siri AI keeps handling system-related requests, the experience will depend heavily on how well that delegation works. A model that excels at conversation but connects poorly to Reminders, Calendar or Messages will be less useful day to day.

4. Cost and subscription

The source gives no pricing details. It is reasonable to assume access to a third-party LLM would depend on an existing subscription or an extra fee, but nothing is confirmed. Watch for this before committing.

5. Reversibility

Favor a setting you can change easily. If the default model choice is buried in settings or tied to an account, switching back can become a hassle.

Quick comparison of the two options mentioned

  • ChatGPT: previously integrated with Siri according to CNET; broad ecosystem; the leak mentions possible logging of system data in OpenAI's web interface.
  • Claude: described in the leak as able to act as the on-device AI with Siri as intermediary; integration details remain unconfirmed.

This is not a quality judgment: it only summarizes what the source claims and what remains uncertain.

Key takeaways

  • The leak describes model delegation in iOS 27 and macOS Golden Gate, citing Claude and GPT-5.6.
  • No confirmation from Apple, OpenAI or Anthropic; the frameworks reportedly come from private code, not an announcement.
  • The DMA is presented as the main driver of this opening, with a possible EU-first effect.
  • The decisive criterion for choosing a default model is not raw performance but how system data is handled.
  • Availability, pricing and real scope: unknown at this stage.

In short, the idea of a Siri that lets you pick your model is appealing, but for now it rests on an unverified leak. The sensible approach is to wait for an official announcement before changing your habits or subscriptions.

This article is published by Roboto, a platform for generating texts, images, videos and voiceovers with AI. Roboto performed no testing of these features.

Source

Siri AI Will Have Deep Integration With ChatGPT and Claude Models, Leaked Build Shows

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