[B.AI Developers and Paid User Proportion Both on the Rise, API Integration Becomes Primary Interaction Method] Deep Tide TechFlow reports that on May 9, the B.AI platform released user data from May 8. API routing calls now account for 90.6% of interactions, with paid users making up an impressive 95.1%, clearly indicating that developers and high-frequency production users are becoming the platform's core driving force. In terms of model selection, the Claude series remains the top choice for complex reasoning and long-context tasks, with a 35.6% call share. Meanwhile, DeepSeek-V4-Flash and GPT-5.5 have shown strong growth momentum in high-concurrency, low-latency scenarios. As API calls become the mainstream interaction method on the platform, the application-layer ecosystem is experiencing an unprecedented explosion, transforming the underlying infrastructure from a mere technical channel into a core foundation for developers to build custom Agents and seize the next-generation AI application entry points. From chat interfaces to digital engines, B.AI is redefining the productivity foundation of the AI-native era.