midjourney
I've been using Midjourney. It's not free, 25 photos, then 10$ for ~200 photos or 30$ for unlimited. It's fairly fast, ~20s for a grid of 4, then as much for upscaling. The whole thing is run through Discord bot. You interact with the bot through Discord commands and it generates and returns the photos to you. https://www.midjourney.com/ https://www.midjourney.com/app/feed/all/ https://www.instagram.com/midjourney.gallery/