Lexica is The Stable Diffusion prompt search engine one of the more popular AI art models makes Stable Diffusion prompting a bit less of a dark art and more of a science !

you can scroll down to check out recently-uploaded art. Clicking on an image will reveal the entire prompt used to generate the artwork, as well as seed information.
The best feature of Lexica is the search bar, which can be used to search for specific prompts or prompt elements. If someone has already created artwork similar to your search query,
the experience is like using an art generator without waiting a minute (or more) for the results. Lexica claims it has indexed over ten million Stable Diffusion images, so there’s a good
chance that someone has already tried what you’re looking for — or something close to it.
Lexica is an excellent way to check out what is possible with AI artwork, especially if you have struggled with prompts in AI generators — seeing the exact prompts used for each image
can help you understand what works best. The only catch is that the Stable Diffusion model is rapidly improving, so many images in the database weren’t created with the latest and greatest versions.