VITA-1.5: Towards GPT-4o Level Real-Time Vision and Speech Interaction - Fu, Chaoyou; Lin, Haojia; Wang, Xiong; zhang, yifan; Shen, Yunhang; Liu, Xiaoyu; Cao, Haoyu; Long, Zuwei; Gao, Heting; Li, Ke; MA, Long; Zheng, Xiawu; et al. (Advances in Neural Information Processing Systems, 2025)