TripoSR
Single-image to 3D mesh in under a second on a 4090.
Open Source 6–8 GB VRAM
- Min VRAM
- 6 GB
- GPU class
- Entry GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free
Stable Zero123
Novel-view synthesis — generate any angle from a single image.
Open Source 6–8 GB VRAMRuns locally
Actually FreeOpen SourceWatermark-FreeHobbyist-FriendlyAPI
Visit Stable Zero123Updated 2025-09-08 · Direct link
Hardware requirements
Runs locally · Entry GPU (6–8 GB)
Min VRAM
6 GB
Rec. VRAM
8 GB
Min RAM
16 GB
Rec. RAM
16 GB
Disk
10 GB
GPU class
Entry GPU
11.8+No Apple SiliconGPU RequiredQuant: FP16
Inference is single-image; lightweight relative to mesh generators.
Screenshot placeholder · Stable Zero123
What is Stable Zero123?
Stable Zero123 generates new viewpoints of an object from a single image. Not a mesh generator itself — pair it with a SDS-based pipeline (Zero123++, DreamGaussian) to produce 3D assets, or use it standalone to create training data for downstream 3D models.
Pros & cons
Pros
- Genuinely useful as a novel-view backbone
- Lighter than full mesh generators
- Strong base for SDS-style 3D pipelines
Cons
- Not a one-shot mesh generator on its own
- Community License revenue clauses
What's actually free?
Stability AI Community License.
✓ Actually FreeOpen SourceWatermark-Free
Alternatives
TRELLIS
Microsoft Research's structured 3D representation model.
Open Source 16–24 GB VRAM
- Min VRAM
- 16 GB
- GPU class
- High-end GPU
- Quant
- FP16
Actually FreeNo SignupOpen SourceWatermark-Free
Hunyuan3D-2
Tencent's open 3D generator — multi-view, PBR, ready-to-use meshes.
Open Source 12–16 GB VRAM
- Min VRAM
- 12 GB
- GPU class
- High-end GPU
- Quant
- FP16
Actually FreeOpen SourceWatermark-FreeAPI