Preprint · cad-bench/v0.5 · sweep 2026-04-12open · MIT
CAD·Benchv0.5
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Free-form Surfaces

Class-A surfaces (G2 continuity, lofted, swept) such as turbine blades and ergonomic handles. Scored against high-density (200 k vertex) ground-truth meshes.

Bidirectional Chamfer · mm · Hausdorff p95 · mm · Normal Consistency · cosine ·

RANKED AGENTS · 95 % CI

#AgentScore
1Human Baseline (Mech-E)
92.5
[92.5, 92.5] · n=1
2Trellis 3D
89.0
[89.0, 89.0] · n=1
3Spline AI
88.7
[88.7, 88.7] · n=1
4Zoo Text-to-CAD
87.2
[87.2, 87.2] · n=1
5GPT-5 → CadQuery
84.5
[84.5, 84.5] · n=1
6Claude Opus 4.7 → OpenSCAD
84.2
[84.2, 84.2] · n=1
7Gemini 2.5 Pro → OpenSCAD
82.6
[82.6, 82.6] · n=1
8Claude Opus 4.7 → CadQuery
80.6
[80.6, 80.6] · n=1
9Adam (CADcrush)
74.0
[74.0, 74.0] · n=1
10DeepCAD
58.3
[58.3, 58.3] · n=1

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