The AI code editor Cursor has become the latest sensation by integrating with GPT-3.5/GPT-4, allowing cross-file queries and operations. It is hailed by users as the best AI code editor, being the most advanced IDE in terms of AI integration. With Cursor, programmers can easily perform complex operations and directly extract information from documents, eliminating the need to sift through multiple files. Cursor also offers automatic debugging features to help programmers locate and resolve code errors. Overall, Cursor is simple and convenient to use, significantly enhancing the efficiency of programmers.