Molmo2: Open Weights and Data for Vision-Language Models with Video Understanding and Grounding. - Christopher Clark; Jieyu Zhang 001; Zixian Ma; Jae Sung Park; Mohammadreza Salehi; Rohun Tripathi; Sangho Lee 008; Zhongzheng Ren; Chris Dongjoo Kim; Yinuo Yang; Vincent Shao; Yue Yang 006; et al. (CoRR, 2026)