Harnessing the power of artificial intelligence (AI) is transforming the way architects, engineers, and building managers approach energy efficiency in building design. By integrating advanced algorithms, data analytics, and machine learning, AI provides unprecedented insights and optimization strategies that enable buildings to consume less energy while maintaining functionality and comfort. This approach not only reduces operational costs and environmental impact but also sets new standards for sustainable urban development. The following sections delve into the various dimensions of how AI is being leveraged to optimize energy efficiency in building design, from conceptual planning to real-time operation and future forecasting.