Higher Satisfaction, Lower Cost: A Technical Report on How LLMs Revolutionize Meituan's Intelligent Interaction Systems. - Xuxin Cheng; Ke Zeng; Zhiquan Cao; Linyi Dai; Wenxuan Gao; Fei Han; Ai Jian; Feng Hong; Wenxing Hu; Zihe Huang; Dejian Kong; Jia Leng; et al. (CoRR, 2025)