The AI Mock Interview platform is designed to assist users in preparing for technical interviews by generating customized questions. It uses GitHub project analysis, resume data, and topic-based input to create relevant, skill-based questions. The platform also offers enhanced user interaction with a built-in text editor, allowing users to write and test code or text directly within the platform. This feature is activated for questions that require text or code input, providing a seamless and efficient experience by eliminating the need to switch between different tools or platforms.