Hidden Reasoning Must Leak, but Need Not Be Readable: Fundamental Opportunities and Limits for Chain-of-Thought Monitoring

Mohammadkhani, Mohammadali; Krishna, Madhava; Sarrof, Yash; Hahn, Michael

by Mohammadali Mohammadkhani, Madhava Krishna, Yash Sarrof, Michael Hahn

Reference:

Hidden Reasoning Must Leak, but Need Not Be Readable: Fundamental Opportunities and Limits for Chain-of-Thought MonitoringMohammadali Mohammadkhani, Madhava Krishna, Yash Sarrof, Michael HahnarXiv, 2026.

Bibtex Entry:

@article{mohammadkhani2026hiddenreasoningleakneed,
      title={Hidden Reasoning Must Leak, but Need Not Be Readable: Fundamental Opportunities and Limits for Chain-of-Thought Monitoring}, 
      author={Mohammadali Mohammadkhani and Madhava Krishna and Yash Sarrof and Michael Hahn},
      year={2026},
      eprint={2609.37312},
      journal={arXiv},
      primaryClass={cs.LG},
      month={December},
      url={https://arxiv.org/abs/2609.37312}, 
  formalization={https://github.com/m-hahn/hidden-reasoning-must-leak}
}