Can Multi-modal (reasoning) LLMs work as deepfake detectors? - Simiao Ren; Yao Yao; Kidus Zewde; Zisheng Liang; Tsang Ng; Ning-Yau Cheng; Xiaoou Zhan; Qinzhe Liu; Yifei Chen; Hengwei Xu (CoRR, 2025)