If you're looking for a service that can handle post-generation processing for AI-generated images, VanceAI is worth a look. VanceAI is an AI-powered photo editing and enhancement suite that offers tools to upscale, sharpen, denoise, remove backgrounds and restore photos. It also converts images to cartoon or sketch styles, so it's a good choice for pros, marketers and businesspeople who have a lot of photos to process.
Another good option is Let's Enhance. It can upscale and otherwise improve blurry or low-resolution images to high resolution and high quality, with options for batch processing, background removal and HDR filtering. It's good for creative pros, e-commerce, real estate and other situations where image quality is important.
If you need more serious image and video editing, Topaz Labs has a collection of deep learning-based software tools. Its Photo AI 3 and Gigapixel 7 products are designed to sharpen, upscale and remove noise from photos, so it's good for pros who need high-end image processing.