@misc{tian2026prompt,
      title={Prompt Optimization Enables Stable Algorithmic Collusion in LLM Agents},
      author={Yingtao Tian},
      year={2026},
      eprint={2604.17774},
      archivePrefix={arXiv},
      primaryClass={cs.AI},
      note={ICLR 2026 Workshop on AI for Mechanism Design and Strategic Decision Making (Best Short Paper)},
      url={https://arxiv.org/abs/2604.17774},
}