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Inside the M4 Apple Neural Engine, Part 1: Reverse Engineering

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How we bypassed CoreML and talked directly to the hardware

Inside the M4 Apple Neural Engine, Part 1: Reverse Engineering How we bypassed CoreML and talked directly to the hardware manjeet singh Feb 28, 2026 147 11 20 Share A note on “we”: Throughout this series, “we” refers to maderix (human) and Claude Opus 4.6 (by Anthropic) working as a pair. The reverse engineering, benchmarking, and training code were developed collaboratively — human intuition driving the exploration, AI reasoning through the data and writing the analysis. We think this kind of human–AI collaboration is a new and natural way to do systems research: one partner as the architect

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