@article{lostinbackpropagationthelmheadisagradien,
  title = {Lost in Backpropagation: The LM Head is a Gradient Bottleneck},
  author = {Nathan Godey and Yoav Artzi},
  year = {2026},
  eprint = {2603.10145},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.10145},
}