Si, Wenwen, Sooyong Jang, Insup Lee, and Osbert Bastani. 2026. “Conformal Constrained Policy Optimization for Cost-Effective LLM Agents”. Proceedings of the AAAI Conference on Artificial Intelligence 40 (30):25446-53. https://doi.org/10.1609/aaai.v40i30.39739.