Apple Siri + Gemini: iOS 26.4 Ships the First Mass-Market Agentic Assistant
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iOS 26.4 is shipping late March with a fundamentally rebuilt Siri powered by Google's Gemini 1.2T-parameter model running on Apple's Private Cloud Compute. Key agentic capabilities include on-screen awareness (reading what's displayed and acting on it — e.g., booking a restaurant from Safari) and multi-step planning. Some advanced features may slip beyond the initial release, but this puts an agentic assistant in the hands of over a billion iPhone users — the largest-scale agent deployment to da