PromptModel - AI 3D Model Generator + Library

No sign-up. No API keys. No subscription. No per-generation fees. No leaving Unity. Just one-click 3D model generation from text or images.

Type what you want — a wooden barrel, an ornate sword, a sci-fi crate. Click Generate. In under 60 seconds, a Unity Prefab is downloaded, automatically processed with PBR materials, given 4 LOD levels, centered pivot, and (optionally) dropped into your active scene.

This asset uses Microsoft TRELLIS (CVPR 2025) via fal.ai for 3D generation, and FLUX schnell for the text-to-image step.

AI-Generated Models Showcase | Online Documentation

🎁 INCLUDED MONTHLY ALLOWANCE

50 generations are issued every month with your purchase. 50 generations is enough for a substantial prop library — barrels, crates, weapons, furniture, architectural details, sci-fi parts. The allowance is issued automatically every 30 days; no need to remember anything.

💡 WHY PROMPTMODEL

✅ NO SUBSCRIPTION — buy once, generate every month. No recurring fees, no per-generation costs.

✅ TEXT OR IMAGE INPUT — type a prompt for prop concepts, or drop a reference photo for image-to-3D when you have a specific look in mind.

✅ FULLY AUTOMATIC IMPORT — GLB download, PBR material extraction, LOD generation (50%/25%/10% triangles), pivot centering, and prefab wrapping all happen automatically.

✅ AUTO-SPAWN INTO SCENE — optional checkbox drops the finished prefab into your active scene at world origin, selected and framed in the Scene view.

✅ GENERATE 4 VARIATIONS AT ONCE — one click on any prefab → 4 alternative versions in a 2×2 picker → import the ones you like. Different seeds, same prompt, meaningfully different geometry.

✅ BUILT-IN MODEL LIBRARY — every model you generate lands in a searchable browser (Window ▸ PromptModel ▸ Model Library): a category sidebar with Favourites and your own custom categories, a sortable thumbnail grid with a card-size slider, and a drag-to-orbit / scroll-to-zoom 3D preview showing triangle and vertex counts.

✅ ZERO RUNTIME OVERHEAD — all scripts are Editor-only. Your build size and runtime performance are completely unaffected.

✅ INSTANT ACTIVATION — enter your Asset Store invoice number, click Verify, and start generating. No website signup, no account creation.

🎨 WHAT YOU CAN GENERATE

Game props — barrels, crates, treasure chests, weapons, tools, lanterns

Furniture — chairs, tables, stools, beds, cabinets, shelves

Architectural details — pillars, signs, banners, debris, ruins

Fantasy items — staves, potions, scrolls, runes, magical artifacts

Sci-fi assets — consoles, antennas, containers, mechanical parts

Natural objects — rocks, tree stumps, mushrooms, crystals, fossils

Stylized characters — small statues, figurines, animals (single subject)

And much more — any object you can describe or photograph

🚀 HOW IT WORKS

1. Enter your Asset Store invoice number (from your purchase confirmation email) and click Verify.

2. Choose Text mode or Image mode in the dropdown.

3. Text: type a prompt like "wooden treasure chest with iron bands". Image: drop a PNG/JPEG/WebP into the drop zone (or drag a Texture2D from Project view, or click to browse).

4. (Optional) Type a name. Leave blank to auto-derive from your prompt.

5. Click GENERATE.

6. The cloud AI generates a textured mesh. The Unity package downloads it, applies PBR materials, generates LOD0/1/2/3 with UnityMeshSimplifier, centers the pivot, and saves a Unity Prefab.

7. With Auto-Spawn checked, the prefab also drops into your active scene at world origin, selected and framed.

Want alternatives? Right-click any PromptModel-generated prefab → Generate similar → 4 variations stream in as thumbnails → tick the ones you like → Import.

⚠️ WHAT'S INCLUDED VS NOT INCLUDED

PromptModel produces single-subject 3D props for any Unity project. Specifically what's covered:

✅ Single-object models — props, items, furniture, architectural pieces

✅ PBR materials — albedo, metallic, roughness textures

✅ Auto-generated LODs at 100%, 50%, 25%, 10% triangle counts

✅ Centered pivot, ready to drop into scenes

✅ Built-in render pipeline + URP support out of the box

✅ Model Library window — browse, search, sort, favourite, categorize, 3D-preview, and one-click drop any past generation into your scene

Not included (be aware before buying):

❌ Photorealistic cinematic quality — game-ready stylized PBR is the strength; photoreal renders are not

❌ Hero characters with detailed faces — TRELLIS handles props much better than people

❌ Multi-object scenes — generate one model per generation, not whole environments

❌ Animated meshes / rigs — outputs are static meshes only

❌ HDRP support — coming in v1.1; works in URP and Built-in RP for v1.0

❌ Lighting-free albedo — like most current AI 3D generation models, TRELLIS bakes some lighting into textures. Best results with soft scene lighting; see documentation for working around this.

📧 Support & Questions

For questions, bug reports, or feature requests, reach out at:

[email protected]

We typically respond within 24-48 hours on weekdays.

Works with Built-in RP and URP. Requires Unity 6 LTS or newer. Internet connection required during generation — generated prefabs and the sample scene work fully offline forever after.