@inproceedings{chakraborty-etal-2026-characterizing, title = "Characterizing the Robustness of Black-Box {LLM} Planners Under Perturbed Observations with Adaptive Stress Testing", author = "Chakraborty, Neeloy and Pohovey, John and Ornik, Melkior and Driggs-Campbell, Katherine Rose", editor = "Liakata, Maria and Moreira, Viviane P. and Zhang, Jiajun and Jurgens, David", booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {ACL} 2026", month = jul, year = "2026", address = "San Diego, California, United States", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.findings-acl.1966/", doi = "10.18653/v1/2026.findings-acl.1966", pages = "39445--39475", ISBN = "979-8-89176-395-1" }