Siri Could Delegate to ChatGPT and Claude, According to a Leak

Key Takeaways

1Private frameworks from iOS 27 and MacOS Golden Gate show Siri capable of delegating to Claude or being replaced by GPT-5.6

2A video from pdfu illustrates the delegation of tasks and the complete replacement of Siri by another model

Why it matters : The integration of third-party models into Siri could transform the Apple ecosystem and open new markets for OpenAI and Anthropic.

Private frameworks from iOS 27 and MacOS Golden Gate suggest a deep integration of Siri's AI with third-party models. A video attributed to the leaker pdfu shows delegations to Claude and a replacement by GPT-5.6 via the Siri interface. This direction aligns with the European obligation to open up to AI developers.

European Law and Opening Up Apple Systems

The Digital Markets Act adopted by the European Union compels Apple to provide third-party developers with similar access to its hardware and software features. This regulation particularly concerns Siri's artificial intelligence as well as Google's Gemini, and requires smartphone manufacturers to allow external AI developers to access software updates directly on the device in the future. According to the source, this regulatory framework has significantly impacted how Apple implements new versions of its operating systems.

Model Delegation and Complete Replacement of Siri

Private frameworks attributed to iOS 27 and MacOS Golden Gate would include a model delegation feature allowing Siri to delegate tasks to third-party models, including Claude from Anthropic. A more advanced application extension service would enable the complete replacement of Siri's AI model with another LLM. According to a post on X by the leaker pdfu, Apple's AI could thus deeply integrate models like ChatGPT from OpenAI and Claude, with the option to choose a GPT model as the primary agent on the device instead of Siri.

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What the Demo Shows: Reminders, Emails, and iMessages

A video released by pdfu shows Siri passing a request to Claude to create a reminder in the Reminders app, with Claude acting as the AI on the device while Siri serves as an intermediary. If a request requires access to proprietary system information from Apple, it is handled by Siri's AI. The demonstration also showcases the use of GPT-5.6, which leverages Siri's stored information to process requests via Siri's interface and voice. GPT-5.6 performs an email search on the device, identifies items in the inbox, and uses this text to draft messages in iMessages. The processed data can then be saved in OpenAI's web interface for later access on another platform.

Apple's Priorities and Prospects for OpenAI and Anthropic

Apple emphasizes Siri's AI as a major development axis for its ecosystem, with the Surprise and Shine event highlighting its role as a selling point for the upcoming iPhone 18 Pro. Representatives from Apple, OpenAI, and Anthropic did not immediately respond to requests for comment. OpenAI and Anthropic continue to develop more advanced models and seek to demonstrate their value in a still lightly regulated environment. Highly lucrative IPOs are being discussed for both companies, which may look to establish themselves in the market of American iPhone users.