ByteDance's Doubao Introduces Paid Pro Tier as User Base Dips by 6 Million ByteDance's AI assistant Doubao has officially launched a paid subscription tier, the Doubao Pro version, with monthly pricing ranging from 68 to 500 RMB ($9 to $70). The move marks a significant shift for China's most popular AI chatbot by user count, but comes at a delicate moment as third-party data reveals the platform lost 6.07 million monthly active users in May — a 1.81% decline that brings its MAU to approximately 330 million.