Watching, Reasoning, and Searching: A Video Deep Research Benchmark on Open Web for Agentic Video Reasoning. - Chengwen Liu; Xiaomin Yu; Zhuoyue Chang; Zhe Huang; Shuo Zhang; Heng Lian 003; Kunyi Wang; Rui Xu; Sen Hu 005; Jianheng Hou; Hao Peng; Chengwei Qin; et al. (CoRR, 2026)