@inproceedings{kostiuk-enevoldsen-2026-one, title = "One prompt is not enough: Instruction Sensitivity Undermines Embedding Model Evaluation", author = "Kostiuk, Yevhen and Enevoldsen, Kenneth", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {EMNLP} 2026", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.findings-emnlp.919/", doi = "10.18653/2026.findings-emnlp.919", pages = "19408--19427", ISBN = "979-8-89176-462-0" }