Stable Fast 3D
Single image to a UV-unwrapped 3D mesh in about half a second
- Category
- Image Generation
- Pricing
- Free for non-commercial use and commercial use up to $1M annual revenue (Stability AI Community License); Enterprise License required above that threshold; also usable via paid Stability AI Platform API credits
- Best for
- Stable Fast 3D fits game studios, VR/AR developers, and technical/3D artists who need to rapidly generate background props, prototype assets, or e-commerce 3D previews from existing product photography, and who have (or can access) basic ML/API tooling to integrate it into a pipeline.
- Official site
- stability.ai/stable-3d
- Last updated
- August 2026
Stable Fast 3D (SF3D) is a 3D asset generation model released by Stability AI on August 1, 2024, as a follow-up to the company's earlier TripoSR model. It takes a single 2D image as input and outputs a complete 3D asset — a UV-unwrapped mesh, material parameters, and albedo colors with reduced illumination baked into the textures — in approximately 0.5 seconds on a GPU with 7GB of VRAM, or close to a second when run through Stability's hosted API. Compared to Stability's own prior SV3D model, which took roughly 10 minutes per asset, SF3D represents a claimed ~1,200x speed improvement while maintaining comparable quality, according to the company's technical report (arXiv:2408.00653).
Unlike consumer-facing image generators, SF3D is distributed as an open model: weights and code are published on Hugging Face and GitHub under the Stability AI Community License, which permits free non-commercial use and free commercial use for individuals or organizations with under $1M in annual revenue (above that, an Enterprise License is required). It's also accessible without local setup via the Stability AI Platform API and the Stable Assistant chatbot, which includes a 3D viewer and WebXR-based augmented-reality preview. Its core differentiator is speed at production-usable quality — explicit UV unwrapping and material generation, not just a raw point cloud or untextured mesh — aimed squarely at game/VR pre-production, e-commerce 3D previews, and rapid prototyping rather than final, hero-quality asset production.
Stable Fast 3D fits game studios, VR/AR developers, and technical/3D artists who need to rapidly generate background props, prototype assets, or e-commerce 3D previews from existing product photography, and who have (or can access) basic ML/API tooling to integrate it into a pipeline. It's a poor fit for non-technical users wanting a polished drag-and-drop web app, or for teams needing final, high-fidelity hero assets straight out of the model without cleanup — those users should look at a managed, UI-first 3D generation product instead, or use SF3D purely for the prototyping stage of their pipeline.
Key features
Single-Image-to-3D Conversion
Upload one image of an object and the model outputs a complete 3D asset — mesh, UV map, and materials — without needing multiple angle photos.
0.5-Second Inference
Runs in about half a second on a GPU with 7GB VRAM, or close to one second via the hosted Stability AI API, enabling near-real-time iteration.
UV-Unwrapped Mesh Output
Produces meshes with proper UV unwrapping out of the box, so assets can be textured and imported into game engines or DCC tools without manual unwrapping.
Delighting / Illumination Disentanglement
Estimates material parameters and albedo colors while reducing baked-in lighting artifacts from the source photo, making textures more reusable under different lighting.
Optional Remeshing
Supports optional quad or triangle remeshing for cleaner topology, adding only 100-200 milliseconds to total processing time.
Open Weights & Code
Full model weights, inference code, and a Hugging Face demo Space are publicly available, allowing self-hosting, inspection, and fine-tuning.
Stability AI Platform API
Available as a hosted API endpoint (platform.stability.ai) for teams that don't want to self-host the model.
Stable Assistant Integration
Accessible through Stability's Stable Assistant chatbot, which includes a 3D viewer and lets users view generated assets in Augmented Reality on WebXR-compatible devices.
Pricing breakdown
Community License (self-hosted)
- Full model weights and code access
- Self-hosted inference
- Commercial use permitted under the revenue threshold
- No usage caps beyond your own hardware
Enterprise License
- Commercial rights above the Community License revenue cap
- Direct support from Stability AI
- Custom deployment terms
Stability AI Platform API
- No local GPU required
- ~1 second generation time via hosted endpoint
- Access via Stable Assistant chatbot with 3D/AR viewer
Pros and cons
Pros
- Sub-second generation time fundamentally changes the prototyping workflow — teams can iterate on dozens of concept assets in the time a single traditional 3D reconstruction used to take.
- The Community License makes it genuinely free for hobbyists, indie developers, and most small-to-mid-size studios, since the $1M revenue threshold is generous relative to typical indie game or small design studio revenue.
- Open weights mean the model can be audited, fine-tuned on custom datasets, or integrated directly into internal pipelines rather than depending on a third-party SaaS uptime.
- Producing UV-unwrapped meshes with delighted textures out of the box saves substantial manual cleanup time compared to raw photogrammetry or NeRF-based reconstruction pipelines.
- Multiple access paths (self-hosted, hosted API, chatbot UI) let teams choose the integration method that fits their technical maturity, from developers to non-technical users.
Cons
- There is no polished consumer web app for casual users — running it locally requires a Python/PyTorch/GPU environment, and even the API route requires basic API integration skills.
- Because commercial licensing is revenue-gated rather than seat- or usage-gated, growing studios need to track their own revenue and proactively negotiate an Enterprise License once they cross $1M, adding legal/ops overhead.
- Output meshes are intentionally low-polygon and simplified for speed, so assets generated for hero shots, cinematics, or close-up product visualization typically need manual retopology and texture touch-ups.
- As a single-image method, occluded geometry (the back or underside of an object not visible in the source photo) is inferred rather than reconstructed, which can produce artifacts on complex or asymmetric objects.
- There is no independent review ecosystem (G2, Capterra, Trustpilot) covering it, since it's distributed as a model/API rather than a conventional SaaS product, so buyers have to rely on Stability's own benchmarks and community discussion rather than aggregated user ratings.
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Compare →Frequently asked questions
Is Stable Fast 3D free to use?
Yes, for non-commercial use and for commercial use by individuals or organizations with under $1M in annual revenue, under the Stability AI Community License. Above that revenue threshold, an Enterprise License is required.
How fast is generation, really?
About 0.5 seconds per 3D asset on a GPU with 7GB VRAM when self-hosted, or close to 1 second via Stability's hosted Platform API.
Do I need to know how to code to use it?
To self-host, yes — it requires a Python/GPU setup (code and weights are on GitHub and Hugging Face). Non-technical users can instead access it through the Stable Assistant chatbot, which provides a UI and a 3D/AR viewer.
What does the output actually include?
A UV-unwrapped mesh, estimated material parameters, and delighted albedo textures, with an optional quad/triangle remeshing step for cleaner topology.
How does it compare to Stability's previous 3D model, SV3D?
SF3D generates assets in about 0.5 seconds versus roughly 10 minutes for SV3D — a claimed ~1,200x speedup — while aiming to maintain comparable output quality, per Stability's published technical report.
Can I use the output in a game engine right away?
The mesh is UV-unwrapped and textured, which reduces prep work, but the low polygon count and single-image-inferred geometry usually still need some manual cleanup before use as a final in-game asset.
Ready to try Stable Fast 3D?
Head to the official site to explore pricing and start a free trial where available.
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