@article{clifflearningprocessrewardsfromthefirstm,
  title = {Cliff: Learning Process Rewards from the First Mistake},
  author = {Peixuan Han and Runhui Wang and Ketan Ramaneti and Jie Hao and Gerald Friedland and Chris Kong},
  year = {2026},
  eprint = {2609.02817},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.02817},
}