PromptBase is a platform that offers a marketplace for users to find and sell prompts that can be used with various artificial intelligence (AI) language models, including DALL·E, GPT-3, Midjourney, and Stable Diffusion. The platform allows users to browse and purchase prompts that are designed to generate specific types of content or images, such as psychedelic illustrations, business name ideas, or fantasy gem game assets. PromptBase also offers the ability to hire creators to produce custom prompts.