Apple this week revealed what its most advanced on-device AI model does, and the feature list is shorter than the hardware requirements might suggest.
In its Siri AI announcement during WWDC 2026, Apple confirmed that the model powers two things: more expressive Siri voices and a major accuracy gain for systemwide dictation.
Both require 12GB of unified memory. Among current iPhones, that limits the more powerful AI model to the iPhone Air, iPhone 17 Pro, and iPhone 17 Pro Max, alongside iPad models with the M4 chip or later, Macs with M3 or later, and Apple Vision Pro with M5.
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