AI 3D model generator

AI 3D models for Unity

Make props, pickups and environment pieces for your Unity project in minutes. Unity doesn't read GLB out of the box, so this guide shows the one package to add, or the OBJ route if you'd rather not.

Try an example prompt Start from an image

From4credits per model

Loading model

Input image for the treasure chest — Treasure chest
From a FLUX.2 Klein concept image, meshed with Rodin Gen-2.5.
Optimised for the web; the file you download from the studio is full size.

Which format to use: GLB with glTFast

Unity's own glTFast package imports GLB with its PBR materials. Unity reads OBJ natively, but OBJ carries only the colour texture.

Native formats: Unity 6 imports .fbx, .dae, .dxf and .obj natively. glTF isn't on the list.
GLB and glTF: Install Unity glTFast (package com.unity.cloud.gltfast) from the Package Manager with Add package by name. It imports in the Editor and at runtime.
Alternative: The Khronos UnityGLTF package also imports glTF and supports Unity 2021.3 and later.
Our output: Rodin Gen-2 at default settings: about 30,000 to 40,000 triangles with 2048 × 2048 PBR maps (colour, normal and metal-roughness).

Convert GLB to OBJ, free in your browser

From prompt to finished file

Add glTFast once
Window, Package Manager, the + button, Add package by name: com.unity.cloud.gltfast.
Make the asset
Generate the model and download the GLB.
Drop it into Assets
Drag the .glb into the Project window. glTFast imports the mesh and its materials as a prefab you can place.

Prompts to start from

Each one opens Text to 3D with the prompt filled in. The concept image is drawn first so you can check it before meshing.

Tips for better results

Set up LODs for many copies
Generate once, then use Unity's LOD Group with decimated copies for scenery you place many times.
Use the quad meshes for editing
Rodin's quad topology is easier to clean up in Blender before it goes into Unity.
Keep scale in metres
Unity's unit is a metre, like glTF's, so scale the model to its real size before placing it.

Where AI models fall short

Worth knowing before you plan a project around them.

Meshes are dense triangle or quad meshes, not hand-optimised game topology; decimate background props.
Models are static; rig characters in Blender or a rigging tool before importing.

Two ways to start

Questions

Something else? Ask us and a person will answer.

Does Unity support GLB?

Not natively. Unity 6 imports FBX, DAE, DXF and OBJ out of the box; GLB needs the glTFast package (com.unity.cloud.gltfast) or Khronos UnityGLTF.

Can I use OBJ instead?

Yes. Convert the GLB to OBJ with the free converter; you get a .zip with the OBJ, its .mtl and the colour texture. Normal and roughness maps aren't part of OBJ.

Do the materials come through?

With glTFast, the PBR materials import as Unity materials. With OBJ, only the colour texture does.

Why does my model come out the wrong size?

GLB is measured in metres and AI models are usually about a metre across. Scale it in your tool, or use the free converter, which can set an exact height in millimetres for printing.

Related guides and converters

Sources

Platform facts on this page come from official documentation, checked October 2026.