GPT Image Hub is a web based library of more than 31,000 prompts for generating AI images. Its collection covers subjects and formats such as portraits, posters, product images, logos, and user interface designs, with prompts intended for models including GPT Image 2, Nano Banana, and Seedream. Users can browse templates by category, model, or style and view an example image. Many prompts contain bracketed placeholders that users can replace with their own subjects, text, or brand details. They can then copy a prompt for use in ChatGPT or Gemini, or generate an image on the site using the model recommended for that template. The site also links to datasets on GitHub and Hugging Face and an MCP Registry. Its description lists image generation at $0.005 per generation.