Musho AI is a Figma plugin that uses AI to generate landing page designs based on simple text prompts. Pablo Stanley created it to help speed up the design process. The plugin is powered by ChatGPT-4 for copywriting and integrates with DALL-E 3 and Stable Diffusion to include images in the designs. It produces dev-ready pages with responsive layouts, styled text, and color variables. Users can regenerate designs to iterate and refine them.