PromptHero

PromptHero is a search index before it is a generator. Its home page pitches searching millions of AI prompts for Midjourney, Stable Diffusion, Sora and every leading generative model, the catalogue tags move with the market — Nano Banana, FLUX Kontext, Hunyuan, Seedream, Riverflow and ChatGPT Image all appear — and the interaction that actually pays off is browsing: prompts attached to their outputs, author profiles, view counts. People come here to reverse-engineer other people's results and to learn a new model's vocabulary fast.

Do not buy it as an image pipeline. The generation features are secondary to the archive, output quality follows whichever third-party model it routes to, and a large slice of the library documents releases that no longer exist — useful as a look-study, misleading as a buying guide for today's frontier. Commercially it is a community site: the images are members' posts, so treat what you find as reference and verify the licence of anything you intend to ship from your own generation. A pricing page exists, but its tier contents were not readable while this review was written. If your job is production assets with clean rights, pick a named-model host and keep PromptHero for the ideation stage.