@inproceedings{coumarane-2026-valid, title = "Valid but Wrong: Domain Invariants and a Cross-Model Plan-Validity Benchmark for Household-Finance {LLM}s", author = "Coumarane, Vignesh", editor = "Huang, Jimin and Lee, Yongjae and Ananiadou, Sophia and Chen, Hsin-Hsi and Takamura, Hiroya and Chen, Chung-Chi", booktitle = "Proceedings of the 11th Workshop on Financial Technology and Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.finnlp-1.40/", pages = "486--490", ISBN = "979-8-89176-466-8" }