This study examines the integration of the ChatGPT API into BIM-based design certification systems, focusing on improving efficiency, accuracy, and user interaction. The design authentication automation evaluation system utilizes ChatGPT to automate the interpretation of complex authentication criteria to provide contextual responses in real time. The research identifies limitations in traditional systems and presents ChatGPT as a solution, linking design certification logic with AI-driven interaction. The study highlights the enhanced user experience, increased efficiency, and consistent, accurate responses provided by the system. Additionally, the integration’s scalability and adaptability make it ideal for the evolving construction industry. Ultimately, this research demonstrates how AI technologies can transform traditional design certification workflows, offering a more efficient, reliable, and user-friendly approach for industry professionals.