Research firm Quest Mobile has released its "2025 Core Report on AI Application Layer Development," highlighting the top AI applications by monthly active users as of December 2025. DouBao, DeepSeek, Yuanbao, Afu, and Alibaba's Qwen emerged as the leading apps in this category. Additionally, Ant Group's AI assistant Lingguang, launched in November 2024, secured a spot in the top ten, reflecting its rapid adoption and popularity.