LLMRouterBench: A Massive Benchmark and Unified Framework for LLM Routing. - Hao Li 069; Yiqun Zhang; Zhaoyan Guo; Chenxu Wang; Shengji Tang; Qiaosheng Zhang 002; Yang Chen; Biqing Qi; Peng Ye 006; Lei Bai 001; Zhen Wang 004; Shuyue Hu (CoRR, 2026)