For AI Texturing, we support uploading models in .fbx / .obj / .stl / .gltf / .glb formats. Be sure to upload one model at a time. The size limit for the web app is 50MB.
For Text to 3D and Image to 3D, we support downloading models in .fbx / .obj / .usdz / .glb / .stl / .blend formats. For Text to Voxel, we also support .vox format.