Overview of the "Voight-Kampff" Generative AI Authorship Verification Task at PAN and ELOQUENT 2025. - Janek Bevendorff; Yuxia Wang 003; Jussi Karlgren; Matti Wiegmann; Maik Fröbe; Akim Tsivgun; Jinyan Su; Zhuohan Xie; Mervat Abassy; Jonibek Mansurov; Rui Xing 002; Minh Ngoc Ta; et al. (CLEF (Working Notes), 2025)