@article{nablareasonerllmreasoningviatesttimegrad,
  title = {$\nabla$-Reasoner: LLM Reasoning via Test-Time Gradient Descent in Latent Space},
  author = {Peihao Wang and Ruisi Cai and Zhen Wang and Hongyuan Mei and Qiang Liu and Pan Li and Zhangyang Wang},
  year = {2026},
  eprint = {2603.04948},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.04948},
}