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Apple's A20 Pro doubles on-device AI speed on 27B model in iPhone 18 Pro test

Demo shows A20 Pro running 27B AI model at 2x A19 Pro speed

1 Sep 20 5:40 AM · 4d ago · 2 articles · 1 post · 2 sources · development 1 of 2

Developer Adrien Grondin ran the Bonsai 27B parameter model locally on an iPhone 18 Pro, showing token-generation speed double that of the iPhone 17 Pro's A19 Pro chip, attributed to the A20 Pro's new dual-16-core Neural Engine and faster 12GB LPDDR5X memory.

Demo shows A20 Pro running 27B AI model at 2x A19 Pro speed
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“The iPhone 18 Pro is much better than what I expected for on-device AI It can run a 27B model at double the speed of the 17 Pro The new A20 Pro chip is a beast”

Adrien Grondin

Apple Chipmaker/device makerAdrien Grondin Independent tester/developer@0x0SojalSec Social media commentator

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1Demo shows A20 Pro running 27B AI model…2Social media amplifies the A20 Pro…
Sep 21Sep 22yesterdaynow · 12:40 PM ET

What was reported 1 claim about this development

  1. 1 outlet Apple A20 Pro Doubles A19 Pro Speed on 27B AI Model [2026]

    first by shattered.io, 4d ago

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All 2 developments of Apple's A20 Pro doubles on-device AI speed on 27B model in… →

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