AI 3D model generator

AI 3D models for Roblox

Generate crates, weapons, furniture and set dressing for your experience, with colour, normal and roughness maps. This guide covers what Roblox Studio accepts and the one step AI meshes need before import.

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: .gltf, .fbx or .obj

Roblox's 3D Importer lists .gltf, .fbx and .obj. glTF and FBX keep PBR textures; OBJ imports as a basic single mesh.

Formats: The 3D Importer imports .fbx, .gltf and .obj. FBX and glTF carry basic and PBR textures; OBJ is for basic single meshes.
Triangles: Individual meshes can't exceed 20,000 triangles.
Geometry: Meshes must be watertight, without exposed holes or backfaces.
PBR: SurfaceAppearance takes colour, normal (OpenGL format), roughness, metalness and emissive maps, one material and one UV set per mesh.
Our output: At Detail Medium, Rodin meshes measure about 30,000 to 40,000 triangles. At Detail Low our test chest came out at 19,215 triangles with Rodin Gen-2.5 and 17,719 with Gen-2, with 2048 × 2048 PBR maps.
UGC accessories: Marketplace accessories have stricter rules: a single mesh of 4,000 triangles or fewer, plus ID verification and upload fees. This guide is about props in your own experience.

Convert GLB to glTF, free in your browser

From prompt to finished file

Make the prop at Detail Low
Describe one object on a plain background, or mesh a concept you drew in Image Studio, with Detail set to Low.
Check the count, convert to .gltf
Drop the GLB into the free converter: it shows the triangle count and writes a .gltf with the PBR textures embedded. Over 20,000? Decimate it in Blender first.
Import into Studio
Open the 3D Importer, choose the file, check the preview and scale, and insert it into your 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

Design for the camera distance
Props seen from across a map need far fewer triangles; decimate those further in Blender.
Keep it one object
Single objects import as one MeshPart with one SurfaceAppearance, which is what Roblox expects.
Match the style
Ask for blocky, low-detail or toon styles in the prompt so the prop fits your experience.

Where AI models fall short

Worth knowing before you plan a project around them.

Detail Low lands close to Roblox's 20,000-triangle limit, not far under it; a busy object can go over and then needs a decimate pass in Blender.
Models are static; characters need rigging before they can animate in Roblox.
Marketplace accessories need far lower triangle counts and specific materials; treat AI meshes as a starting point there.

Two ways to start

Questions

Something else? Ask us and a person will answer.

Which file should I import into Roblox Studio?

FBX or glTF if you want PBR textures, OBJ for a plain mesh. Roblox's 3D Importer lists all three. Our converter writes .gltf and .obj from the GLB; Blender exports .fbx.

Why won't my model import?

Most often it's over 20,000 triangles per mesh. Generate it at Detail Low, or decimate it in Blender. Holes and inverted faces can also fail Roblox's watertight check.

Can I sell AI models as UGC items?

Accessories must meet Roblox's UGC specs (single mesh, 4,000 triangles or fewer) and marketplace policies, including ID verification and fees. Check the commercial terms of your PhotoGenius plan too.

Can the model have PBR materials in Roblox?

Yes, through SurfaceAppearance: colour, normal, roughness and metalness maps. Our models come with all of these.

Related guides and converters

Sources

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