Qianben Chen Jingyi Cao Jiayu Zhang Tianrui Qin Xiaowan Li King Zhu Dingfeng Shi He Zhu Minghao Liu 0003 Xiaobo Liang Xin Gui Ge Zhang 0009 Jian Yang 0003 Yuchen Eleanor Jiang Wangchunshu Zhou A<sup>2</sup>FM: An Adaptive Agent Foundation Model for Tool-Aware Hybrid Reasoning. 2025 October abs/2510.12838 CoRR https://doi.org/10.48550/arXiv.2510.12838 db/journals/corr/corr2510.html#abs-2510-12838 streams/journals/corr