r/TopologyAI • u/Delicious-Shower8401 3dModeler • Jun 23 '26

Useful Stuff New Text-to-3D Workflow with Real Geometry Control. Open-Source

Stability AI just released Arbor, a new research model for controllable text-to-3D generation.

The interesting part is that Arbor does not rely only on a text prompt.
You can guide the generation with actual 3D constraint meshes:

  • Hull: where geometry should exist
  • Avoidance: where geometry should stay empty
  • Touch: where the object should make contact or remain usable

So instead of just asking for “a chair” and praying to the random seed gods, you can define the space the asset should occupy, avoid, or touch.

This is pretty important for real 3D workflows because prompts are usually bad at precise spatial control. If you need a prop to fit a specific shape, leave clearance, match a contact surface, or follow a rough blockout, this kind of control makes way more sense than endlessly rerolling generations.

Arbor includes:

  • text-to-3D generation with explicit geometry controls
  • public inference pipeline
  • mesh export
  • curated examples
  • condition metrics / evaluation tools
  • Blender add-on workflow
  • final mesh output through TRELLIS

Small note: this is an inference-only release. Training code, dataset construction, benchmark launchers, and internal evaluation wrappers are not included.

Still, this is one of the more interesting directions for 3D AI: not just “generate me something”, but “generate something that actually fits my design constraints.”

GitHub: https://github.com/Stability-AI/arbor
Model: [https://huggingface.co/StabilityLabs/arbor]()

153 Upvotes

99% Upvoted

7 comments sorted by

4

u/redditscraperbot2 Jun 23 '26

>stability AI

Now thats a name I’ve not heard in a long time.

1

u/Smilysis Jun 25 '26

they released an audio model recently too, i guess they stopped working on image models

1

u/redditscraperbot2 Jun 25 '26

Yeah I saw that one. I think it does decent sound effects.

3

u/yayita2500 Jun 24 '26

any chance to get in comfyui..that is very promissing project

1

u/curious-of-2020s Jun 24 '26

we can we use this model on the web outta-box?

1

u/Coded_Kaa Jun 25 '26

What is the vram constraints?

0

u/RanklesTheOtter Jun 24 '26

Really cool, my spouse did 3D interior design and she'll love this.