Cursor is an AI-first Integrated Development Environment (IDE) designed to offer pair-programming with powerful AI integration. It allows users to chat, edit, and use specialized agents for coding assistance across the entire codebase. Users can leverage AI to refactor, understand, and generate code seamlessly. Cursor supports various programming languages and offers a unique blend of AI-driven code editing, inline changes with tracked history, and up-to-date API knowledge, aiming to make developers extraordinarily productive.