iOS 27 Finally Lets You Ditch Siri for Claude or GPT-5.6

A dataminer going by the name pdfu poked around the guts of iOS 27 and macOS Golden Gate, uncovering hidden mechanics that allow Siri to delegate its heavy lifting to external models. The experiments successfully swapped the default server-side intelligence for Anthropic's Claude and OpenAI's GPT-5.6 Terra, proving that the foundation for a smarter assistant is already sitting there in the code, gathering dust.

One of the discovered methods, dubbed Model Delegation, lives inside the App Intents framework. It functions as an extension, allowing a third-party neural network to act as a sidekick to Siri rather than a total replacement. However, it requires a restricted developer entitlement that Apple is keeping under lock and key, acting like a strict parent guarding the liquor cabinet.

The second discovery, the Inference Providing protocol, reaches much deeper into the Model Manager Services. By intercepting the server-side LLM, the external model inherits Siri’s system prompt and its list of tools. This setup effectively tricks the assistant into executing system functions while powered by a completely different brain, essentially performing a digital identity theft on behalf of the user.

While these doors are technically present in the OS, they remain firmly shut to the public, and Apple has shared absolutely zero plans to open them up for developers. Right now, coders are still stuck with standard App Intents, which feel like trying to perform brain surgery with oven mitts compared to full LLM integration.

Ultimately, Apple is terrified of losing control over the user experience, preferring a dumb assistant that follows the rules over a smart one that might accidentally expose the company’s carefully curated ecosystem as a collection of disjointed APIs.

Source: x.com