PromptHero

PromptHero is a community-driven search engine and gallery of generative AI prompts, indexing millions of prompts and reference images for Midjourney, Stable Diffusion, DALL-E, Sora and other leading image and video models. You browse by keyword, subject, artist style, lens or camera technique, see the exact prompt that produced each image, and remix it for your own runs. The site also bundles an in-browser image generator with monthly credits and a prompt-engineering course.

It is aimed at AI artists, designers and marketers who want to skip the trial-and-error of cold-starting a prompt and instead crib from work that already looks good. Pricing is freemium: a free tier lets you search and use limited generations, while the PRO plan (around $25/month billed annually) unlocks roughly 7,200 generation credits a month, faster queues and enhanced profile features. A marketplace lets prompt designers sell their work.

PromptHero is not a model trainer or a heavy production pipeline; it sits one layer above the model APIs as a discovery and learning surface. There is no public REST API for programmatic access, and the generator is more of a convenience than a replacement for a serious Midjourney or ComfyUI workflow.