Yes. I've been doing a bunch of 3D experiments with recent models, you can check the session logs and see if they've retrieved anything. They're building the 3D models directly in code.

I even built an environment that allows execution of Python code to render with Blender but allows no other interactions (including networking, I sandbox that off). They can create good 3D models just fine - here's a Faberge Egg by Gemini 4 Argon: https://tools.simonwillison.net/blender-viewer?url=https%3A%...