Relum Ipsum is an AI tool made for designers to quickly and easily write website copy using AI without leaving Figma. It generates unique copy based on a brief company description and offers options to refine and customize the generated content. The tool is available through a subscription service and supports English language only. The text is created using state-of-the-art GPT-3 technology, and the accuracy of the generated content depends on the quality of the company description provided.