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threeD
NewFree GLB to STL, OBJ and USDZ converter

Turn a sentence into a 3D model

threeD is an AI 3D model generator for text and images. Generate a textured mesh, clean up its topology, rig it and export it to your engine, AR viewer or printer.

Start generatingInspect sample models

Plans from $11.99 a month. Cancel any time.

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ShapeSurfaceTexture
Loading modelDemo replays a CC0 sample model. Drag to orbit.

42 open-licensed reference models, each with measured triangle counts

Browse the gallery
  • 42CC0 sample models to inspect
  • 8industry workflows documented
  • 8in-depth 3D guides
  • 5export formats from one model

From idea to exported asset in one workspace

Each step is its own tool, and each one also works on models you made elsewhere. Use the whole chain or just the part you need.

  1. Step 1Text to 3DDescribe the object, its materials and how worn it looks. Pick from four previews, then refine the best one.prompt
    a marble bust on a round plinth, light weathering
  2. Step 2Image to 3DA product photo or sketch in; a textured mesh out.
  3. Step 3AI texturingRepaint any mesh with a full PBR set.
  4. Step 4RemeshHit any triangle budget, or rebuild clean quads.
  5. Step 5Rig and animateSkeleton, skin weights and a test clip, automatically.

What AI generation is good at today, and where it still needs you

Generated meshes save hours of blockout and texturing, but they are a starting point. Knowing the weak spots up front saves credits and rework.

Works well

  • Props, furniture, food, vehicles and stylised characters
  • Rotationally symmetric objects from a single photo
  • Fast blockouts for level design and previs
  • Retexturing many variants of one mesh

Plan to fix by hand

  • Text and fine print on surfaces usually comes out garbled
  • Thin parts like cables, straps and hair may merge or break
  • Glass and other transparent materials come out opaque
  • Exact dimensions: always check scale before printing or manufacturing

Want to get better first results? Read how to write text-to-3D prompts and how to choose a reference image.

Built for people who need a lot of 3D, fast

See how each field uses it

Exports that open where you work

Every model is stored once and converted on export, so you can download the same asset in several formats without regenerating it. Already have a GLB? Convert it free or inspect it in your browser.

FormatBest forPlan
GLB / glTFWeb, Three.js, Babylon.js, Godot, most game enginesAll plans
FBXUnity, Unreal Engine, Maya, 3ds Max (keeps rigs and animation)All plans
OBJ + MTLUniversal interchange for static meshesAll plans
USDZApple AR Quick Look on iPhone and iPadAll plans
STL3D printing slicers (geometry only, no colour)All plans

Generate models from your own code

The REST API exposes the same tools as the studio. Start a job, poll or receive a webhook, then download the file.

API overviewRead the reference
terminal
# Start a text-to-3D preview job
curl https://api.threed.site/v1/generations \
  -H "Authorization: Bearer $THREED_KEY" \
  -d '{"mode":"text","prompt":"mossy stone well","stage":"preview"}'

# Response
{ "id": "gen_8f2c", "status": "queued", "credits": 10 }

Questions people ask

What is an AI 3D model generator?
It is a tool that turns a text description or a reference image into a 3D mesh with textures. threeD produces a mesh you can rotate, edit and export, not just a rendered picture of one.
Can I use the models in a commercial game or product?
Yes. You own the outputs you generate and can use them commercially on every plan. The details, including what happens with uploaded reference images, are on the model licensing page.
Which file formats can I export?
GLB/glTF, FBX, OBJ, USDZ and STL on every plan. Rigged characters export with their skeleton and animation in GLB and FBX.
How long does a model take to generate?
A preview mesh usually takes well under a minute. A refined, textured model takes a few minutes depending on queue length and the texture resolution you choose.
Do I need to know Blender or another 3D tool?
No. You can generate, preview and export entirely in the browser. If you do use a 3D tool, the exports open in it without any conversion step.

Make your first model in the studio

Every plan includes all the tools, commercial rights and every export format. Cancel any time.

Open the studioCompare plans