Apple's new Siri runs on a custom Gemini model and Nvidia Blackwell GPUs. Federighi says data is never stored. Five new AI models use a three-tier privacy architecture.

Apple unveiled Siri AI at WWDC 2026, rebuilt on a custom Gemini model with a standalone app, personal context, and a three-tier privacy architecture.

At WWDC 2026, Apple is detailing its Apple Intelligence improvements, starting with its Google Gemini collaboration. The company is also...