Oxygen Builder Mode, powered by CodeWP, enhances the WordPress site-building experience by offering AI-driven tools for creating and customizing websites. Users can engage with an AI expert for 24/7 support, troubleshoot issues, and generate code snippets in CSS, JavaScript, and PHP. The chat mode provides intuitive guidance on utilizing Oxygen's features, while the code mode allows for advanced customizations and integrations. With presets for common tasks and a natural language interface, Oxygen Builder Mode simplifies the process of building and managing WordPress sites, making it accessible for both beginners and experienced developers.