If you're looking for something to replace Image Variations, Imajinn is a good option. It's got a range of tools to create new artistic interpretations of uploaded images. It's easy to use with no programming skills required. The images are in the public domain, and it offers a range of pricing plans for individuals and businesses.
Another option is getimg.ai, which offers a broad suite of tools for generation and editing. That includes AI Canvas for image enlargement, an Image Editor for fine tuning, and a Real-Time AI Generator for fast image creation. It's good for a wide range of creative projects, and you can generate high-resolution images with a variety of pricing plans.
Dreamlike Art is a simple interface for generating original art with the Stable Diffusion technology. It's got fast generation, powerful AI tools and a public API planned for high volume users. It's good for people who need quick access to high quality AI-generated images, with a generous free credits plan and a subscription option for more.
If you want something more focused, Impossible Images is a full-stack platform with a library of AI-generated stock images. You can also commission specific images and upscale existing ones. It's designed to produce unique AI-generated images, so it's good for social media, design and marketing projects.