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397B AI Successfully Runs Locally on iPhone

·2026.08.16 06:32

Key point

By leveraging a Mixture-of-Experts (MoE) architecture, a 397B-parameter AI model has been successfully run locally on an iPhone.

Details

By applying a Mixture-of-Experts (MoE) architecture, 96% of the model remains inactive, enabling execution in mobile environments.

The flash-moe team improved inference performance by 38% through optimizations that remove caching code.

This technology is based on a paper published by Apple three years ago and demonstrates the feasibility of On-device AI, which generates text directly on the device without a network connection.

However, at the current level of technology, challenges remain regarding improvements in speed, storage space, and thermal management.

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