Apple's iOS 27 on-device AFM 3 has 20B params, activating only 1-4B
rxwei · x · 2026-09-15
Per @adrgrondin, iOS 27 ships Apple's most powerful on-device model, AFM 3 Core Advanced: roughly 20B total parameters with dynamic activation of only 1-4B depending on the request. A demo shows it running locally on an iPhone 17 Pro.
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