The proportion of B.AI developers and paying users both rose, with API integration becoming the primary mode of interaction.

BAI Platform released its user data for May 8. API route calls now account for 90.6% of total platform interactions, while the proportion of paying users has reached 95.1%, clearly indicating that developers and high-frequency production users have become the core driving force behind the platform. In terms of model selection, the Claude series—accounting for 35.6% of all API calls—remains the top choice for complex reasoning and long-context tasks; meanwhile, DeepSeek-V4-Flash and GPT-5.5 are demonstrating strong growth momentum in high-concurrency, low-latency scenarios. As API calls become the dominant mode of platform interaction, the application-layer ecosystem is exploding at an unprecedented pace. Underlying infrastructure is no longer merely a technical conduit—it has evolved into core infrastructure enabling developers to build custom Agents and seize the next-generation AI application entry point. From chat interfaces to digital engines, B.AI is redefining the foundational productivity layer of the AI-native era.