If you're looking for a Cascaid alternative, Facet is worth a look. It can generate and edit images in real time, and it's got collaborative abilities like controllable image elements and advanced prompting. Facet is a browser-based service with pricing tiers from free to commercial that should accommodate solo pros and teams.
Another good option is getimg.ai, which has a broad collection of AI tools for generating and editing images. That includes an AI Generator, Image to Video converter, Real-Time AI Generator and AI Canvas for expanding images. The service supports more than 80 community-trained AI models, and pricing is on a credit system that can accommodate a variety of creative needs.
If you need to generate high-quality visual assets at scale, check out Leonardo. It's geared for creators and teams, with image generation, an AI Canvas for editing and 3D texture generation. It's good for inspiration, character design, game assets and concept art. Leonardo offers free and paid subscriptions with different token limits.
Last, ChatDesigner offers a conversational interface for generating and editing images with a high degree of specificity. Among its abilities: text-to-image generation, image-to-image generation and AI-generated image editing. It's good for pros who need to tightly control their image generation and editing jobs, but its interface is also accessible to those with less experience.