@inproceedings{acl2026a,
  author    = {Wenrui Cai and
               Chengyu Wang and
               Junbing Yan and
               Jun Huang and
               Xiangzhong Fang},
  title     = {Reasoning with OmniThought: A Large CoT Dataset with Verbosity and Cognitive Difficulty Annotations},
  booktitle = {Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics},
  pages     = {8431–8450},
  year      = {2026}
}