I signed up for AI Test Kitchen yesterday and have made a few designs with ImageFX. It's not available everywhere yet and its feature set is very limited, but I'm finding it's output consistent and really good for fashion design (I haven't tested it on any other subject matter yet).
It has a really neat user interface feature - when you click Create after entering your prompt, some keywords in the prompt text field become dropdowns with suggested choices. See the first image for an example - all those highlighted phrases in the prompt field can be clicked on, and additional choices made. You can iterate super-fast this way!
Here's the prompt I used:
Professional Vector Illustration Of a beautiful sci-fi Conservative women's Dress, sleeveless, front view, Linen, modern, Corporate Fashion, Elegant And Clean Mid-Market Design, realistic professional design concept
I only got two images this time. Sometimes it gives 4, but mostly I'll only get one or two. Not sure why that is, but again, it's still in early development.
I noticed an Edit Image button on hovering the generations, and it is basically one function - you can draw a mask and add a prompt for the mask area. See second image - I added a mask and a simple prompt "add fabric" to fix the hole in the neck of the dress. I didn't think it would work, but it actually did, and it gave me four options. See third image.
I'm working on a more in-depth tutorial, but I encourage you to go ahead and sign up if you're eligible and try it out! (there are also text, video and music generators-TextFX, VideoFX, MusicFX)
Have fun!