AnalysisAI ModelsSeptember 14, 2026

Sakana AI's PC-ALM trains 1000-layer networks without backpropagation

PC-ALM is a layer-local alternative to backpropagation that avoids the global forward-backward-update phase locking, training networks up to 1000 layers deep. It builds on predictive coding, which researchers note has no known analogue in brain learning.

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