GreekMMLU: A Native-Sourced Multitask Benchmark for Evaluating Language Models in Greek. - Yang Zhang; Mersin Konomi; Christos Xypolopoulos; Konstantinos Divriotis; Konstantinos Skianis; Giannis Nikolentzos; Giorgos Stamou; Guokan Shang; Michalis Vazirgiannis (CoRR, 2026)