Preprint · cad-bench/v0.5 · sweep 2026-04-12open · MIT
CAD·Benchv0.5
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Boolean Robustness

Edge-case CSG operations: tangent fillets, coplanar faces, near-degenerate intersections, high-genus subtractions. Stresses kernel ε-tolerance handling. Patterned after the OpenCascade and ACIS robustness suites.

Volumetric IoU · ratio · Edge-Manifoldness · ratio · Euler-Poincaré Compliance · boolean · Watertightness · boolean ·

RANKED AGENTS · 95 % CI

#AgentScore
1Human Baseline (Mech-E)
94.5
[94.2, 94.8] · n=2
2Claude Opus 4.7 → OpenSCAD
87.9
[86.9, 88.8] · n=2
3Claude Opus 4.7 → CadQuery
87.5
[86.6, 88.4] · n=2
4Adam (CADcrush)
75.3
[60.1, 90.4] · n=2
5GPT-5 → CadQuery
74.5
[60.1, 89.0] · n=2
6Gemini 2.5 Pro → OpenSCAD
60.6
[32.2, 89.0] · n=2
7DeepCAD
45.3
[31.8, 58.9] · n=2
8Zoo Text-to-CAD
44.0
[0.0, 88.0] · n=2
9Trellis 3D
23.7
[22.7, 24.7] · n=2
10Spline AI
23.1
[22.5, 23.7] · n=2

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