Microsoft released an Office suite enhanced with GPT-4 in the dead of night, priced at $30 per month, aiming to boost the productivity of hundreds of millions of global workers. The new version of Copilot will be integrated into Windows 11, Office 365, and Edge, offering users more powerful office tools. The launch of Microsoft 365 Copilot marks the formal entry of AI assistants into a new era, transforming the way people work. Applications like Word, Excel, and Outlook will benefit from GPT-4 support, providing users with smarter text generation and data analysis capabilities. Microsoft's late-night revolution has sparked widespread attention, with high hopes placed on the potential of AI assistants.