12 AI 3D Model Generators for Game Assets, Animation and Product Design

AI 3D model generators now produce genuinely convincing meshes in seconds. The problem is that almost none of them produce the thing you actually need to ship: a UV-unwrapped, quad-topology asset with a complete PBR map set inside a polygon budget your engine will accept. These twelve options differ most in how much cleanup they need before an asset is ready to ship.

Two names that appear on almost every competing list no longer exist. And the engines themselves have not solved this for you.

What actually makes a 3D asset shippable

A shippable asset has five properties: watertight or deliberately open topology, a usable UV layout, a complete PBR map set, a polygon count inside your LOD budget, and an export format your engine ingests without a repair pass. Every generator here was scored on those five. Most comparison lists score on one (triangle count) and call it game-ready.

Polygon count is the easiest number to print and the least useful one on its own. A 15,000-triangle mesh with no UVs will not render a texture. A watertight mesh with a broken normal map will show shading seams that no amount of decimation fixes.

The other thing nobody publishes is what happens to your UVs when you clean up the mesh. Meshy’s own documentation states it plainly in its Remesh guide: remesh rebuilds topology, so UVs must be regenerated afterwards. Its UV Unwrap page repeats the point and advises unwrapping before texturing. That dependency chain (remesh, then unwrap, then texture) is invisible in every vendor’s headline feature list.

One more piece of context. A community QA pass on r/gamedev ran a headless mesh checker across 2,307 AI-generated assets from the MIT-licensed 3D Arena dataset, excluding 303 point clouds to leave 2,004 measurable meshes:

40.1% of the measured assets were not watertight, 39.7% were missing UVs entirely, 79.8% exceeded Unity mobile’s 30,000-triangle budget, and the median face count was 77,402 triangles. Only 10.3% passed all seven checks cleanly.

That is one person’s tooling on one dataset, posted with roughly one upvote and 26 downvotes, so treat it as indicative rather than definitive. It is directionally consistent with everything the vendor documentation implies, and a better description of the category than any marketing page.

What the comparison covers

The comparison uses vendor pricing, product documentation, model cards and licence files checked on 16 October 2026. Quality and speed figures come from published sources; the tools were not tested hands-on.

Prices vary by region. Meshy and Alpha3D displayed Indian rupees, while Tripo, Hyper3D, Sloyd, Spline and Polycam displayed US dollars. Check both the currency and the current licence before buying.

Three names on every list that are gone or gone from 3D

This is where most published comparisons are simply wrong, because they were written against a 2025 snapshot of the market.

Luma AI retired Genie. Their text-to-3D product lived at lumalabs.ai/genie. Web archive snapshots show that URL returning HTTP 200 through 29 December 2025, then switching to permanent redirects from 8 January 2026 onward. On 16 October 2026 it resolves to Luma’s homepage, and neither Luma’s product page nor their pricing page contains “3D model”, “Genie” or “text-to-3D” anywhere.

CSM was acquired and its domain is dead. csm.ai no longer resolves, and the web archive records a 404 snapshot from 6 February 2026. 3D Printing Industry reported on 4 February 2026, citing S&P data, that Alphabet acquired Common Sense Machines in a deal that closed on 24 January 2026, that the company employed roughly a dozen people, and that PitchBook shows a last valuation near $15 million. The original scoop was The Information’s briefing of 24 January 2026.

Hunyuan3D’s newest weights are older than they look. Hunyuan3D 2.1 was released on 13 June 2025 and the Tencent-Hunyuan repositories for Hunyuan3D-2 and Hunyuan3D-2.1 have not been pushed since October 2025. Later hosted Hunyuan versions require a Tencent login; their version numbers are not confirmed here.

The 12 AI 3D model generators at a glance

Tool	Entry price shown 16 Oct 2026	Topology control	PBR maps	Export formats	Commercial licence
Meshy	Free; Starter ₹850/mo (geo-priced)	Triangles; remesh to target; UVs lost on remesh	Colour, roughness, metallic, normal	FBX, OBJ, GLB, USDZ, STL, BLEND	Free = CC BY 4.0; paid = you own
Tripo AI	Free; Pro $20/mo billed annually	Quad toggle; Smart Mesh; Smart Low-Poly	PBR flag on by default	FBX, OBJ, GLB, USDZ, STL, BLEND	Free = non-commercial; Pro+ = commercial
Hyper3D Rodin	Free; Creator $30/mo	Quad vs Raw, published face targets	Base colour, metallic, normal, roughness, or Shaded	GLB, USDZ, FBX, OBJ, STL	Paid tiers; permissive Rodin terms
Sloyd	Guest $0; Plus $15/mo billed yearly	Quad or triangle, set target poly, LODs	4K texture editing on paid tiers	BLEND, FBX, GLB, OBJ, textured OBJ, USD, USDZ	Guest personal; Plus commercial; Pro resale
Alpha3D	From €5; Basic ≈33 models/mo	Quad meshes, Smart Topology, UV unwrap	Paid-tier toolkit	GLB, OBJ, FBX	On request via account tiers
Spline AI	Hobby free; Pro $15/seat/mo annually	Not published	Base colour, metallic-roughness, normal	GLB, GLTF, USDZ, STL	Studio terms
Polycam	Free; Basic $12.50/mo billed yearly	Capture-derived, not generative	AI texture generator	GLTF plus 6 mesh formats	Subscription terms
Kaedim	No public pricing	Human-modelled, delivery-scoped	Artist-authored materials	Production delivery	“Full ownership and commercial rights”
Hunyuan3D 2.1	Free, self-hosted	Triangle mesh	PBR texture synthesis	Not stated in README	Tencent licence, territory-limited
TRELLIS.2	Free, self-hosted	O-Voxel; open surfaces, non-manifold	Base colour, roughness, metallic, opacity	Not stated in README	MIT
TRELLIS	Free, self-hosted	Structured latents; mesh decode	PBR texture synthesis	Not stated in README	MIT
TripoSR	Free, self-hosted	Single-image reconstruction	Vertex colour by default; optional baked texture	Not stated in README	MIT

“Not published” or “not stated in README” means the cited documentation does not answer the question.

The hosted generators

Hyper3D Rodin is the most production-honest of the hosted services, because its API documentation specifies the output rather than gesturing at it. Its Gen-2 endpoint exposes a mesh_mode parameter where Raw means triangle faces and Quad means quad faces, and publishes what each quality preset targets: in Quad mode, high is 50,000 faces, medium 18,000, low 8,000, extra-low 4,000. In Raw mode the same presets are 500,000, 150,000, 20,000 and 2,000. The material parameter takes PBR, Shaded, All or None, with PBR documented as base colour, metallicness, normal and roughness. Geometry exports as GLB by default, with USDZ, FBX, OBJ and STL as alternatives: note there is no .usd or .usda, which matters if your pipeline is USD-native. A quad_normal flag bakes high-resolution detail into the normal map, and bbox_condition sets real-world dimensions in metres.

Pricing is pay-by-result. The Creator plan is $30 per month or $24 monthly on annual billing ($288 up front), Business is $120 or $96 annual ($1,152), and direct credits outside a subscription cost $1.50 each. Gen-2 base generation consumes 0.5 credits, so roughly $0.75 per mesh at direct rates. The extreme-high texture mode, yielding 6K or 12K textures, costs 2.0 credits instead of 0.5. One caveat: the documentation states Gen-2.5 tiers default to Raw while every other tier defaults to Quad.

Tripo AI has the broadest feature surface and the most aggressive production deadline. Its pricing runs Free at 200 credits a month (roughly 13 models, public and non-commercial only), Pro at $20 per month billed annually (3,000 credits, about 200 models, which works out to $0.16 per model on their own arithmetic), Max at $90 annually (25,000 credits, about 1,660 models, $0.09 each) and Team at $55 per seat. Unlimited 8K textures are a Max feature. The API runs from v1.3-20240522 (deprecated) through v3.0-20250812, v3.1-20260211 to P1-20260311, with v2.5-20250123 as the default. Maximum face count is 1,500,000 standard or 2,000,000 detailed for the 3.x models. Setting quad=true forces FBX output and caps quad faces at 150,000. Texture quality adds 10, 20 or 30 credits for standard, detailed or extreme, and auto_size scales the model to real-world metres.

Then read this: Tripo API V2 stops accepting requests on 31 October 2026. V2 receives no feature updates or technical support from 1 October 2026 and is officially retired from 1 November 2026. If you are building a pipeline on Tripo, that deadline is two weeks from this article’s publication.

Meshy is the most polished product and the one most likely to surprise you on licensing. Meshy’s pricing varies by region; US-dollar plan prices are not confirmed here. Free carries 100 monthly credits and up to 10 assets with one concurrent task; Pro carries 1,000 credits and 10 concurrent tasks with API access and unlimited downloads; Studio shares 5,500 credits across the team.

Meshy’s documentation is the best of the three. Their export guide states which formats carry textures: GLB embeds them, FBX and OBJ ship a separate textures folder that must stay beside the mesh file, USDZ embeds, and STL and 3MF carry none. That last point explains the most common support question in this category, which is a model that imports grey. Their API price list is unusually granular: on the current meshy-7.1 model, Image-to-3D costs 20 credits for mesh only, 30 with 2K or 4K textures and 35 with 8K, while Remesh, UV Unwrap and auto-rigging are 5 credits each. Their changelog dates the current model precisely: Meshy 7.1 shipped in September 2026, replacing Ultra Mode with Standard, Ultra 2K and Ultra 4K geometry options.

Here is a discrepancy worth knowing about. Meshy’s Pro plan card advertises 1,000 credits as “up to 100 assets”, implying 10 credits per asset. Their own API list prices a single image-to-3D with 2K textures at 30 credits. If web app and API consumption differ, fine. If they do not, your real throughput on Pro is closer to 33 textured assets a month than 100.

Sloyd is the price-to-capability outlier and the only one selling unlimited generations. The pricing page lists a free Guest tier limited to one AI generation per day with personal-use rights, Plus at $15 per month ($12.50 annual) and Pro at $50 ($41.67 annual). Unlimited generations start on Plus, which also brings 4K texture editing, quad mesh selection, explicit LOD control, plugins for Unity, Unreal and Blender, and commercial use. Only Pro adds redistribution and marketplace reselling. Their terms of use grant a perpetual worldwide right but restrict 3D printing to personal use unless you contact support.

Their game-development page claims “textured, UV-mapped 3D model with clean topology” and lets you set target polygon counts before export. Vendor claims, and unusually specific ones. The export list is the widest in this category: seven formats including USD and USDZ, plus BLEND. The API is separately priced, which almost nobody tells you: 75 credits per dollar, minimum $12, with a base mesh at 10 credits and texturing, text input, multiple images, quads and 500K-plus polys adding 10, 5, 10, 5 and 10. An ordinary textured mesh is 20 credits, about $0.27; a multi-image quad build is 40 credits, about $0.53.

Alpha3D is worth watching and hard to price from outside. Their pricing page states “Start at €5” in the body copy, though the plan cards rendered in rupees for me, and third-party trackers disagree with each other. What is unambiguous is the credit structure: Tester gives 90 monthly credits for roughly 3 models, Basic 1,000 credits for roughly 35 models plus ultra-high resolution, low-poly, quad meshes, Smart Topology and UV unwrapping, Creator 3,200 credits for roughly 107 models, and Creator Pro 10,000 for roughly 333. Alpha3D’s API uses the same credits as the app rather than a separate tier, with jobs from 12 credits for UV unwrapping up to 61 for texturing or segmentation on a GLB. An MCP server for Claude and ChatGPT is included on every plan.

Spline AI is a different category and needs a different question. Spline builds interactive 3D for the web, and its AI 3D generation follows from that. The AI page documents text-to-3D returning four candidate looks, image-to-3D, and the ability to choose between different underlying models. Materials are documented as base colour, metallic-roughness and normal: a real PBR set, though it combines metallic and roughness into one map. Pricing runs Hobby free, Pro $15 per seat monthly on annual billing, Team $30 and Business $70.

The single most useful thing on that page is their own worked example. The fox character Spline showcases has 1,122,848 faces and 700,747 vertices at 4.7 MB. That is roughly 37 times Unity’s mobile triangle budget, from a company’s flagship AI 3D demo. It tells you exactly what Spline’s generator is optimised for, and it is not your mobile game.

Two tools that are not generators but change the answer

Polycam is capture-first, and for product design that is often the better answer. Its pricing is Free, Basic at $150 per year ($12.50 monthly), Business at $400 per year per user and Enterprise at $1,200 per year per user with a three-user minimum. Basic includes unlimited object captures and unlimited AI-generated captures with six mesh export formats. Photogrammetry produces measured geometry of a real object, so your product proportions come from reality rather than from a prior.

Kaedim sells human hours, not model weights. They run a review-markup-revise-approve loop with named human artists and publish no pricing: their /pricing URL 404s. What they do publish matters more: ISO 27001 certification, a commitment that your IP is not used for training AI models, and that custom assets come to you “with full ownership and commercial rights.” Their case-study savings figures are vendor-reported, without independent verification.

The open-source options you can actually run

TRELLIS.2 is the strongest open model available under a permissive licence. Microsoft’s repository is MIT-licensed, was last pushed 10 July 2026, and describes a 4B-parameter image-to-3D model built on what the authors call O-Voxel, a “field-free” sparse voxel structure. The three claims that matter for production are topology robustness, texture coverage and speed:

• It handles open surfaces such as clothing and leaves, non-manifold geometry, and internal enclosed structures: the cases that break iso-surface methods.
• It models base colour, roughness, metallic and opacity.
• On an NVIDIA H100 it reports approximately 3 seconds at 512³, 17 seconds at 1024³ and 60 seconds at 1536³.

Read that texture list carefully before planning a pipeline around it. A normal map is not among the attributes the README lists. If your engine’s look depends on normal mapping, you will be authoring those yourself.

The original TRELLIS remains useful and is also MIT, with model weights published on Hugging Face under the MIT licence and over 2.3 million recorded downloads. Its last push was 26 June 2026, so it is maintained, not abandoned.

Hunyuan3D 2.1 is the best-documented open stack and the one with the licence trap. Released 13 June 2025, with its technical report following on 19 June, it ships full model weights and training code and adds PBR texture synthesis in place of the earlier RGB-only texture model. Hardware requirements are stated: 10 GB VRAM for shape generation, 21 GB for texture, 29 GB for both: up sharply from the 6 GB and 16 GB the 2.0 repository documented. Its README benchmark table against Step1X-3D, TRELLIS and TripoSG is vendor-run, so read it as a claim.

The licence is the part that will stop a launch. Hunyuan3D is not Apache 2.0, despite several comparison pages saying so. It uses the Tencent Hunyuan 3D 2.0 Community License Agreement, and the opening line reads: “THIS LICENSE AGREEMENT DOES NOT APPLY IN THE EUROPEAN UNION, UNITED KINGDOM AND SOUTH KOREA AND IS EXPRESSLY LIMITED TO THE TERRITORY.” Section 5(b) prohibits using the works or their outputs to improve any other AI model. Section 4 requires a licence from Tencent above one million monthly active users. The sibling PartCrafter release, Hunyuan3D-Part from 23 September 2025, carries the same exclusion.

Step1X-3D and TripoSR round out the permissive set. Step1X-3D from StepFun is Apache 2.0. TripoSR, from Tripo AI and Stability AI, is MIT and was last pushed 4 June 2026. It runs on about 6 GB of VRAM for a single image and outputs vertex colours unless you pass --bake-texture. ByteDance’s Hi3DGen is MIT but small.

Production readiness compared

Criterion	Rodin	Tripo	Meshy	Sloyd	TRELLIS.2	Hunyuan3D 2.1
Quad mesh option	Yes, explicit switch	Yes, quad=true (forces FBX)	Not stated	Yes, user choice	Not stated	Not stated
Published face targets	Yes (4K–500K by preset)	Yes (max 1.5M std / 2M det.)	Target set via Remesh	User-set before export	Up to 1536³ voxel res.	Not stated
Automatic UV unwrap	Not stated	Not stated	Yes, 5 credits	Yes	Not stated	Not stated
UV survives remesh	Not stated	Not stated	No: docs say it does not	Not stated	N/A	N/A
Base colour	Yes	Yes (PBR default)	Yes	Yes	Yes	Yes (PBR)
Normal map	Yes (+ quad_normal bake)	Yes	Yes	4K editing; maps not itemised	Not listed in README	Yes (PBR pipeline)
Roughness / metallic	Yes	Yes	Yes	4K editing; maps not itemised	Yes / Yes	Yes (PBR pipeline)
USD export	USDZ only	USDZ	USDZ	USD + USDZ	Not stated	Not stated
Real-world scale control	bbox_condition	auto_size in metres	Not stated	Not stated	Not stated	Not stated

Real-world scale control deserves emphasis because it is the cheapest fix available. Rodin’s bbox_condition takes three integers in metres, and Tripo’s auto_size does the same. Without it you inherit whatever scale the training data had, and you discover the problem when a crate is the size of a car.

What it costs to produce 100 assets

Tripo’s own arithmetic is the cleanest: its Max tier works out to $0.09 per model and Pro to $0.16, both stated on the pricing page. Sloyd’s API gives $0.27 for a standard textured image-to-3D and $0.53 for multi-image with quads, at its published 75 credits per dollar. Hyper3D’s Gen-2 base at 0.5 credits and $1.50 per direct credit gives $0.75. Meshy’s API list gives 30 credits for an image-to-3D at 2K, which against its own Pro tier works out to somewhere between $0.10 and $0.30 depending on which plan price you use.

Run 100 finished assets through those numbers and you get $9 to $75 in generation cost. Now add the part that dominates: human time. If cleanup takes fifteen minutes per asset, 100 assets is 25 hours. No subscription tier removes that. Two cost traps are worth naming. Texture resolution surcharges add up silently: Rodin’s HighPack, Tripo’s detailed and extreme tiers and Alpha3D’s Ultra high resolution all cost extra per request, and a 4K PBR set is roughly four times the texture memory of a 2K set at the same UV layout. And credit packs reset differently from vendor to vendor; Meshy separates monthly credits from permanent credits, so a top-up behaves differently from your plan allowance.

A workflow that survives contact with production

This is the sequence I would use, derived from what the vendor documentation actually requires rather than from what the demos show.

1. Decide your polygon budget before you generate anything. Meshy’s documentation suggests roughly 5,000 faces for mobile and 20,000 for PC. Rodin’s Quad presets give you named targets you can actually hit: 4,000, 8,000, 18,000 or 50,000.

2. Generate at a controlled topology, not the default. Set Rodin to Quad explicitly rather than relying on the tier default, or set Tripo’s quad=true and accept that your export becomes FBX. Generating triangles and hoping for the best is how you end up retopologing by hand.

3. Clean geometry first, and assume UVs die. If you remesh, regenerate UVs before anything else. Sloyd’s approach of letting you set polycount pre-export avoids the problem entirely, which is the argument for paying for it.

4. Texture last, at the resolution your target hardware can afford. 2K base colour plus normal is the mobile default. Push to 4K only for hero assets on PC and console, where Epic’s Nanite technical documentation notes an average cost of 14.4 bytes per input triangle, meaning a one-million-triangle Nanite mesh runs about 13.8 MB on disk before textures.

5. Set real-world scale before export. Rodin’s bbox_condition or Tripo’s auto_size. Doing this last means re-baking every material.

6. Export to the format your engine actually ingests. FBX for Unity, GLB for web and for Unreal when you want textures in one file. Meshy documents that FBX and OBJ ship loose texture files that must stay beside the mesh; moving them is the most common cause of a grey import.

7. Rebake lighting rather than trusting baked normals. Textures generated from a single source image carry that image’s lighting. Hyper3D’s quad_normal exists because baking high-frequency detail into a normal map is cheaper than modelling it.

8. Version-control the source image, not just the mesh. The reference image, the seed and the prompt are what let you reproduce or correct a specific asset six months later.

What breaks after you generate twenty assets

Naming and version control collapse first. Every generator names files after its own task ID. Twenty assets later you have task_8f3c.glb, task_8f3c_v2.glb and no memory of which passed review.

Scale drift is the silent killer. Without a bounding-box constraint you rely on priors learned from a dataset with no consistent real-world scale. Two assets from the same style preset can differ by an order of magnitude.

Texture seams appear where the source image had none to resolve them. Generators work from one view, so the back of the object is synthesised. Meshy’s documentation advises unwrapping or re-texturing when “AI Texturing shows visible seams.”

Consistency across a set is the hardest problem, and only some vendors address it. Sloyd markets custom style training across a batch. Meshy’s 3D Agent generates style-consistent batches from a shared art direction. Alpha3D offers multiview input of up to eight views.

Non-watertight geometry breaks boolean operations and physics colliders. Backface culling hides open boundaries on static background props viewed from outside, but it wrecks 3D printing and volumetric rendering.

Downgrading a plan does not retroactively free your assets. Meshy’s help centre is explicit: models generated on a paid plan keep those rights; anything generated after downgrading falls under CC BY 4.0.

Licensing, copyright and who actually owns the output

Read the terms, not the pricing page. The differences are large and mostly hidden.

Meshy states in its Terms of Service, last updated 19 September 2026, that “Meshy owns all right, title, and interest” in free-plan output and licenses it back under CC BY 4.0 with credit. Paid-plan customers own their Customer Output. The same document says the service may embed metadata or watermarks identifying output as AI-generated, and you agree not to remove them.

Tripo permits lawful commercial and non-commercial use of outputs under section 3.2 of its terms, but bars using outputs “to create models or services that directly compete with Holymolly” and disclaims any warranty of non-infringement. The vendor takes no responsibility for IP problems arising from your reference images.

Hyper3D, operated by Deemos, is the most permissive on the hosted side. Their terms say that for Rodin, “we will not limit your use of such Output.” The restriction sits elsewhere: ChatAvatar output is under a personal, non-commercial Creative Commons licence unless you purchase a commercial licence, which their pricing page places on the Business tier.

The open models are the ones to read closely. MIT (TRELLIS, TRELLIS.2, TripoSR) and Apache 2.0 (Step1X-3D) are unambiguous. Hunyuan3D is not, and its territory clause excluding the EU, UK and South Korea belongs in front of a lawyer before you ship in Europe.

Then there is the copyright question nobody in this category wants to answer. The U.S. Copyright Office’s report on Copyright and Artificial Intelligence, Part 2 on Copyrightability, published 29 January 2025 (about twenty months before this article) states that “if content is entirely generated by AI, it cannot be protected by copyright,” and concludes that “prompts alone, however, at this stage are unlikely to satisfy those requirements.”

The practical implication: you cannot copyright the generation, but a work containing AI-generated content can still be protected where a human determined the expressive elements. That argues for keeping source files and recording your retopology and texture work. If the asset carries your client’s branding or a recognisable protected character, get legal advice.

What Unity and Unreal actually offer in October 2026

Neither engine generates 3D models for you, and both have rebranded away from the idea that they would.

Unity has retired the Unity AI brand name and, per its own FAQ, “Unity Muse is a deprecated product offering which featured Unity first-party models, while Unity’s AI tools utilize third party models.” What remains requires Unity 6.0 or later: an in-editor assistant that consumes credits, plus an AI gateway, MCP server, CLI and official plugin that are free with no concurrency limits. Unity states that AI-generated assets carry embedded metadata flagging them as AI-generated and that “developers are fully responsible for managing app store declarations and verifying usage rights.”

Unreal Engine 5.8, released 23 June 2026 and described by Epic as the last planned major UE5 release, shipped Mesh Terrain, a Procedural Vegetation Editor, MetaHuman Collections, production-ready MegaLights and an experimental MCP plugin. No generative 3D model. The feature that matters most here is Mesh to MetaHuman, which Epic says can now “turn any human character mesh with arbitrary topology into a fully rigged MetaHuman with MetaHuman topology in a single workflow.” That is Epic’s answer to the topology problem above: let the engine impose known-good topology on a messy input.

The bottom line

If you need shippable game assets this quarter, Hyper3D Rodin is the hosted service whose documentation lets you actually control the outcome, and Sloyd is the value pick if $15 a month and unlimited generations fit your workflow. If you have a GPU and the appetite for maintenance, TRELLIS.2 under MIT is the most capable thing you can run yourself.

Before choosing, check four things in this order: whether you can force quad topology, whether UVs are generated and whether they survive your cleanup, whether you get a normal map, and whether the free tier’s licence lets you ship. Everything else (prompt quality, render fidelity, generation speed) is a demo-day difference, not a production difference.

And if a source tells you Luma Genie or CSM are still options, it was written before this year. Check the dates.

FAQ

Which AI 3D model generator is best for game assets right now?

Hyper3D’s Rodin, on documented output control rather than marketing. Its API exposes a mesh_mode switch between Quad and Raw with published face-count targets, quad presets from 4,000 to 50,000 faces, a PBR material covering base colour, metallicness, normal and roughness, and export to FBX, GLB, OBJ, USDZ and STL. Sloyd at $15 per month is the credible budget alternative.

Do AI 3D generators produce UV maps and PBR textures automatically?

Most do, unevenly, and the docs rarely say so. Meshy generates colour, roughness, metallic and normal maps and charges 5 credits for its Unwrap UV tool. Tripo’s pbr flag defaults to true, with quality surcharges of 10, 20 and 30 credits. Rodin offers PBR, Shaded, All or None at 2K by default. TRELLIS.2’s README lists base colour, roughness, metallic and opacity but no normal map.

Can I use these commercially, and what is the catch on free tiers?

Paid tiers are broadly commercial; free tiers are not interchangeable. Meshy owns free-plan output and licenses it under CC BY 4.0 with credit. Tripo’s free plan is public and non-commercial, with commercial rights starting at the $20 Pro tier. Sloyd’s Guest plan is personal-use, Plus adds commercial use, and only Pro at $50 adds marketplace redistribution.

Is Hunyuan3D free for commercial use?

Not straightforwardly. It ships under the Tencent Hunyuan 3D 2.0 Community License Agreement, not Apache 2.0. Its Territory excludes the EU, UK and South Korea entirely; Section 5(b) bars using its outputs to improve any other AI model; and Section 4 requires a licence from Tencent above one million monthly active users.

What happened to Luma AI’s Genie and to CSM?

Both are gone. lumalabs.ai/genie returned HTTP 200 through 29 December 2025 in archive snapshots, then began returning permanent redirects from 8 January 2026, and resolves to Luma’s homepage today with no 3D product listed. csm.ai no longer resolves and shows a 404 in archive snapshots from 6 February 2026, after Alphabet’s acquisition of Common Sense Machines closed on 24 January 2026.

Do Unity or Unreal Engine generate 3D models with AI now?

No. Unity has deprecated Muse entirely and retired the Unity AI brand, leaving coding assistants that require Unity 6.0 or later. Unreal Engine 5.8, released 23 June 2026, shipped Mesh Terrain, a Procedural Vegetation Editor and an experimental MCP plugin, but no text-to-3D or image-to-3D generator. Mesh to MetaHuman is the closest thing.

How much does one usable AI-generated 3D asset cost?

Between roughly $0.09 and $0.75 at published API rates. Tripo states $0.09 per model on Max and $0.16 on Pro. Sloyd’s API is 20 credits, about $0.27, for a standard textured mesh. Hyper3D is 0.5 credits at $1.50 per direct credit, so $0.75. None of those figures includes the manual cleanup the output usually needs.

Why is “game-ready” the wrong question to ask?

Because it bundles five separate questions: watertight topology, a usable UV layout, a complete PBR map set, a polygon count inside your LOD budget, and export formats your engine ingests cleanly. Meshy’s own documentation notes that Remesh rebuilds topology and removes your UVs. That dependency chain, not triangle count, is the real blocker.

Can I ship assets generated with these tools without a copyright problem?

Probably, but not automatically. The U.S. Copyright Office’s Report Part 2 on Copyrightability, published 29 January 2025, states that entirely AI-generated content cannot be protected by copyright and that prompts alone are unlikely to satisfy authorship requirements. Every vendor here also disclaims non-infringement, so responsibility for reference images sits with you.

What is the realistic time from generation to a shippable asset?

Tens of minutes, not seconds. Generation is fast: TRELLIS.2 reports about 3 seconds at 512³ and 60 seconds at 1536³ on an H100. The time goes into decimating to budget, regenerating UVs after a remesh, fixing seams, welding and recalculating normals, and checking scale.

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Sources

• Meshy Pricing: plan structure, credits per plan, asset licence tiers, export formats, geo-pricing behaviour
• Meshy Terms of Service: last updated 19 September 2026; free-plan CC BY 4.0 ownership, paid-plan output ownership, AI-generated metadata
• Meshy Help: Can I Use Meshy Assets Commercially: attribution templates, marketplace resale, downgrade behaviour
• Meshy Docs: Game Assets: workflow order and polygon budget guidance
• Meshy Docs: Export Formats, which formats carry textures
• Meshy Docs: Remesh and Unwrap UV: remesh removes UVs
• Meshy API Pricing: credits per request, model families, meshy-6 lowpoly retirement date
• Meshy Changelog: Meshy 7.1 (September 2026), Meshy 7 (August 2026), Smart Topology timing claim
• Tripo AI Pricing: plan prices, credits, cost per model, feature gates, credit packs
• Tripo AI Terms of User Agreement: last updated 11 July 2025; section 3.2 commercial use, non-compete clause, non-infringement disclaimer
• Tripo API Generation docs: model versions, face limits, quad toggle, texture quality surcharges, auto_size
• Tripo API V2 retirement notice: V2 end-of-life 31 October 2026
• Hyper3D Pricing: Creator and Business tiers, per-credit rate, redos limits, ChatAvatar licence
• Hyper3D Docs: Rodin Gen-2: mesh_mode, quality presets, material types, export formats, bbox_condition, TAPose
• Hyper3D Docs: Generate Texture: texture resolutions, extreme-high mode cost, accepted input formats
• Hyper3D Terms: Rodin output use, ChatAvatar non-commercial default
• Sloyd Pricing: Guest, Plus and Pro tiers, monthly credits, licence distinctions
• Sloyd API Pricing: 75 credits per dollar, per-feature credit costs
• Sloyd: Game Development: export format list, quad and LOD claims
• Sloyd Terms of Use: perpetual licence, 3D printing and redistribution restrictions
• Alpha3D Pricing: credit allocations, approximate models per month, plan feature gates
• Spline AI: PBR map set, model stats, showcased fox face count
• Spline Pricing: plan prices and included AI credits
• Polycam Pricing: plan prices, AI generated captures, export formats
• Kaedim: human-in-the-loop model, IP and training-data commitments, ISO 27001
• Tencent Hunyuan3D-2 repository: model zoo, VRAM requirements, last release dates
• Tencent Hunyuan3D-2.1 repository: PBR pipeline, VRAM figures, benchmark table
• Tencent Hunyuan 3D 2.0 Community License Agreement: territory exclusion, Section 4 MAU threshold, Section 5(b), Section 6(a)
• Tencent Hunyuan3D-Part: PartCrafter release, same licence family
• Microsoft TRELLIS.2: MIT licence, O-Voxel, resolution and timing table, texture attributes
• Microsoft TRELLIS: MIT licence, structured latents, dataset release
• Step1X-3D: Apache 2.0 licence
• TripoSR: MIT licence, Tripo AI and Stability AI
• ByteDance Hi3DGen: MIT licence
• Luma AI pricing and product page: no 3D products listed
• Internet Archive CDX record for lumalabs.ai/genie: HTTP 200 through 29 December 2025, 308/307 redirects from 8 January 2026
• 3D Printing Industry: Google Parent Acquires 3D AI Company Common Sense Machines: deal closed 24 January 2026 per S&P, headcount and valuation
• The Information: Exclusive: Google Acquires 3D Image Generator Startup: original report, 24 January 2026
• Unity’s AI Tools FAQ: Unity AI brand retirement, Muse deprecation, Unity 6.0 requirement, AI-generated asset metadata
• Unreal Engine 5.8 is now available: 23 June 2026 release, Mesh to MetaHuman, no generative 3D feature
• Nanite Technical Details: 14.4 bytes per input triangle
• U.S. Copyright Office: Copyright and Artificial Intelligence: report parts and publication dates
• Copyright and Artificial Intelligence, Part 2: Copyrightability (PDF): entirely AI-generated content not copyrightable; prompts alone insufficient
• Khronos glTF: royalty-free 3D transmission specification
• r/gamedev: 3D Mesh Topological Health: community QA pass over 2,004 AI-generated assets