If you want a service that lets you upload a batch of images and get back a batch of AI-generated images in the same style and mood, Enhance AI is a good option. It can generate text-to-image, image-to-image and custom styles. It's got an easy-to-use interface and a tiered pricing system that's flexible enough to accommodate a variety of users, so it's good for beginners and pros.
Another good option is Leonardo, geared for creators, teams and developers. It's got a range of features like image generation, AI Canvas for editing and 3D texture generation. It's got a free tier and paid subscriptions, so it's good for a broad range of people. It's good for use cases like graphic design, marketing and product photography.
If you want something more elaborate, Getimg.ai offers a suite of tools for generating new images and editing existing ones. That includes AI Generator, Image to Video conversion and AI Canvas for image expansion. Getimg.ai also supports API integration and community-trained AI models, so it's good for use cases like architecture and art creation.