Hidden frameworks in Apple’s latest operating systems suggest third-party AI models could eventually assist or replace Siri’s decision-making capabilities.
Apple may eventually allow users to hand Siri’s tasks to third-party artificial intelligence models such as Anthropic’s Claude and OpenAI’s ChatGPT, according to hidden frameworks discovered in the company’s latest operating systems.
The discovery was made by developer pdfu, a regular source of pre-release Apple software findings, who identified two private frameworks in the release candidates for iOS 27 and macOS Golden Gate. Neither framework is currently available to ordinary users, but both point to a future in which Apple’s own AI model may not be the only option powering Siri-related tasks.
One mechanism, called Model Delegation, is built around Apple’s existing App Intents system. In a demonstration posted on X, pdfu showed a Mac “Search or Ask” interface with Claude available through an “Ask…” menu. Claude interpreted a request to create a reminder and then handed the system action back to Siri, which created the entry in Apple’s Reminders app.
The arrangement effectively separates reasoning from execution. A third-party model could interpret a natural-language request or generate content, while Siri would remain responsible for interacting with Apple’s system features. The demonstration also showed Claude generating a CSV file.
A second mechanism, called Inference Provider, appears to go significantly further. It is part of a broader Model Manager Services framework and could allow an external AI model to assume Siri’s server-side decision-making role.
In a separate demonstration, GPT-5.6 Terra received Apple’s Siri planner prompt and tool definitions directly. The model then carried out tasks including searching device email, extracting information from messages and sending iMessages through Siri’s interface and voice.
The distinction between the two systems is significant. Model Delegation would make an outside AI model a helper that Siri can call, while Inference Provider could allow an external model to effectively replace Siri’s reasoning layer while Apple’s interface remains in place.
However, the technology is not live for users. The current macOS Golden Gate release candidate’s “Ask…” menu reportedly lists Apple’s built-in ChatGPT extension, but Claude is not available as a selectable option. Apple also has not opened the Model Delegation entitlement to third-party developers, including Anthropic.
The development may be linked to regulatory pressure from the European Union’s Digital Markets Act, which includes interoperability requirements affecting major technology platforms. Apple has previously restricted some of its newer Siri AI capabilities in the EU rather than immediately opening them under the bloc’s regulatory framework.
For OpenAI and Anthropic, broader access to Apple devices could carry significant distribution value. ChatGPT already has an established position as a Siri extension, while Claude’s appearance in the leaked demonstration indicates technical compatibility rather than a confirmed commercial agreement.
For now, the frameworks represent potential capabilities embedded in Apple’s software rather than features available to consumers. Whether Apple ultimately enables third-party models to assist or replace parts of Siri remains to be seen.
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