SSRN paper: https://ssrn.com/abstract=5240330 (v1.1, last updated May 19, 2025)
Alternative download:  http://zeyuan.allen-zhu.com/paper/2025-canon.pdf
Authors: Zeyuan Allen-Zhu
Part 4.1 (v2) in progress: many new exciting results + larger scale real-life experiments + code release; stay tuned.

Code release for Part 4.2 (new!): https://github.com/facebookresearch/PhysicsLM4
Mode release for Part 4.2 (new!): huggingface

The term Canon Layers was jointly conceived and designed by ZA and Xiaoli Xu 

Slide show (best viewed on a computer)

@article{Allenzhu2025-canon,
  author = {{Allen-Zhu}, Zeyuan},
  title = {{Physics of Language Models: Part 4.1, Architecture Design and the Magic of Canon Layers}},
  year = {2025},

  month = may,

  journal = {SSRN Electronic Journal},

  note = {\url{https://ssrn.com/abstract=5240330}} 

}