Topoheal · open dataset · version 1.0

A census of 2,307 AI-generated 3D assets

Name: Topoheal 3D asset census
Creator: Topoheal
License: https://creativecommons.org/licenses/by/4.0/

Across 23 generators. Every asset was inspected by the same engine, at the same version, with the same thresholds. Of them, 1,461 failed geometry inspection; this page reports how many of those repaired cleanly, and how many our own repairs made worse.

§ 01 The number we would rather not publish

Repairing these assets introduced 312 new defects that were not in the original files. That figure is in the table below, per generator, and it is the reason the rest of the table is worth reading. A repair tool that reports no regressions has not looked for them.

§ 02 The data

Generator	Assets	Measurable	Unmeasurable	Median faces	Failed lint	Heal: full	Heal: partial	Heal: none	Regressions we caused	Lint p50 (ms)
OVERALL	2,307	2,004	303	77,402	1,461	63.7%	33.6%	2.7%	312	15,326
3DTopia-XL	101	101	0	48,794	71	57.7%	33.8%	8.5%	2	3,103
404_GEN	101	0	101	-	-	-	-	-	-	-
Hi3DGen	101	101	0	632,684	101	77.2%	22.8%	0.0%	20	22,936
Hunyuan3D-2	101	101	0	40,000	-	-	-	-	0	203
Hunyuan3D-2.1	101	101	0	40,000	4	75.0%	0.0%	25.0%	0	406
IM-MA	101	101	0	600	101	36.6%	63.4%	0.0%	3	4,136
InstantMesh	101	101	0	74,500	101	88.1%	11.9%	0.0%	10	21,173
LGM	101	0	101	-	-	-	-	-	-	-
Meshy-6	101	101	0	299,266	101	33.7%	66.3%	0.0%	49	25,952
Real3D	101	101	0	205,508	101	68.3%	31.7%	0.0%	14	21,810
SAM-3D-Objects-3DGS	101	0	101	-	-	-	-	-	-	-
SF3D	101	101	0	24,128	5	100.0%	0.0%	0.0%	0	70
SPAR3D	101	101	0	29,936	9	100.0%	0.0%	0.0%	0	81
Strawb3rry	101	101	0	163,878	100	94.0%	6.0%	0.0%	4	16,352
Strawberrry	101	101	0	21,362	53	73.6%	13.2%	13.2%	2	1,136
TRELLIS.2-4B	101	101	0	290,881	101	26.7%	73.3%	0.0%	70	28,526
TripoSG	101	101	0	1,367,152	101	65.3%	34.7%	0.0%	17	28,458
Unique3D	101	101	0	665,808	101	37.6%	62.4%	0.0%	48	23,410
Zaohaowu3D	101	101	0	500,000	101	93.1%	6.9%	0.0%	6	13,558
TRELLIS	100	100	0	16,403	35	17.1%	8.6%	74.3%	0	109
Meshy-5	98	98	0	69,170	85	100.0%	0.0%	0.0%	0	19,108
TripoSR	97	97	0	60,876	97	90.7%	9.3%	0.0%	2	22,600
MeshFormer	93	93	0	96,892	93	30.1%	69.9%	0.0%	65	18,620

Download CSV · Download JSON · re-lint 2026-08-17 · built from results/aggregate_by_generator_relint_2026-08-17.csv

§ 03 ⛔ Withheld on purpose

The source artifact carries defect rates per generator. They are not published here, because unfixed findings in our own engine undermine them and we would rather publish less than publish something we would have to retract:

pass_rate: not quotable, FINDING-7
defect_not_watertight: overstated, FINDING-7
defect_non_manifold: undermined by FINDING-7
defect_uv_missing: gated, FINDING-10
defect_floating_debris: a FLOOR, not a measurement, FINDING-8
defect_inverted_normals: withheld with the defect family
defect_inconsistent_normals: withheld with the defect family
defect_vertex_color_only: withheld with the defect family
defect_over_budget: not in the guardrail's quotable table
over_unity_mobile_budget: not in the guardrail's quotable table

Those numbers exist and are reproducible; they are not yet defensible. When the findings close, the column appears and the version number moves.

§ 04 What this measures, and what it does not

It reads triangle meshes: .glb .gltf .obj .ply .stl. It cannot do B-rep, so STEP, IGES and Parasolid are outside it entirely, and there is no tolerance check at all.
It has no opinion on whether an asset looks right. It measures geometry, not art direction.
Unmeasurable assets are counted, never silently dropped: 303 of 2,307 could not be read well enough to judge, and they are reported rather than excluded from the denominator.
⚠️ The corpus is a snapshot. Generators ship new models continuously, so a row here describes the model version captured at collection time, not the vendor's current output.

§ 05 Cite it

Topoheal (2026). Topoheal 3D asset census, version 1.0, re-lint 2026-08-17. n=2,307 assets across 23 generators. https://topoheal.com/census/

@dataset{topoheal_census, title = {Topoheal 3D asset census}, year = {2026}, version= {1.0}, note = {re-lint 2026-08-17; n=2307 assets, 23 generators}, url = {https://topoheal.com/census/} }

Licensed CC BY 4.0. Corrections are welcome and will be published with the correction, not quietly folded in.

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