@article{trainseparatelymergetogethermodularpostt,
  title = {Train Separately, Merge Together: Modular Post-Training with Mixture-of-Experts},
  author = {Jacob Morrison and Sanjay Adhikesaven and Akshita Bhagia and Matei Zaharia and Noah A. Smith and Sewon Min},
  year = {2026},
  eprint = {2604.18473},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.18473},
}