If you're looking for a Masterpiece Studio alternative, 3D AI Studio is worth a look. This AI-based toolset turns text or imagery into 3D assets like models, animations and textures in a matter of seconds. It's got tools like Text to 3D, Image to 3D, AI Texturing and automatic export in various formats, so it can be a good option for game development and animation that's fast and inexpensive.
Another contender is Meshy, which generates 3D models with text prompts and 2D images. It supports multiple art styles and export formats, and has AI texturing and automatic PBR map generation. Meshy is geared for AR/VR and gaming projects, and has a variety of pricing tiers depending on your needs.
If you're working on collaborative spatial design, Bezi could be the way to go. The service speeds up 3D design with real-time collaboration, Figma integration and support for AR/VR headsets. It's good for designing and prototyping 3D apps and games, and has more advanced features like generative AI and developer handoff so you can easily integrate it into your existing workflow.