ELOQUENT Lab at CLEF 2026: Evaluation of Generative Language Model Quality. - Jussi Karlgren; Maria Barrett; Ondrej Bojar; Marie Isabel Engels; Diandra Fabre; Lorraine Goeuriot; Josiane Mothe; Philippe Mulhem; Mario Piacentini; Luis Francisco Vargas Madriz; Didier Schwab; Pavel Sindelár; et al. (ECIR (4), 2026)