At Apple's developer conference on June 8, Tim Cook gave his final keynote as chief executive, a role he would leave on September 1. The centrepiece was Siri, rebuilt on a bespoke 1.2-trillion-parameter model developed by Google, under a deal estimated at roughly a billion dollars a year.
Alongside it came an extensions system supporting multiple AI vendors, putting an Anthropic model inside the iPhone as an option for the first time, plus a new generation of Apple's own models, built with Google, for on-device and server use.
The strategic reading is clear and unusual. The company that historically controls the entire stack of its products now depends on a direct competitor's model for the most visible layer of the system.
The choice is consistent with its stated strategy of on-device processing, private cloud and external partnership rather than a massive infrastructure build. It avoids the billion-dollar capex line competitors took on, and converts into a contract a risk the others took on as construction.
The point of attention is the familiar one in supplier dependency, sharpened by the supplier being a competitor: a change in price, availability or priority hits a product that is a signature of the brand.