Preprint · cad-bench/v0.5 · sweep 2026-04-12open · MIT
CAD·Benchv0.5
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2-D Sketch Constraints

Closed planar profiles defined purely by geometric constraints (tangency, equal-length, perpendicular, coincident). Score is fraction of constraints the agent honors after sketch resolution.

Constraint Solve Rate · ratio · Bidirectional Chamfer · mm ·

RANKED AGENTS · 95 % CI

#AgentScore
1Human Baseline (Mech-E)
87.6
[87.6, 87.6] · n=1
2Claude Opus 4.7 → CadQuery
84.8
[84.8, 84.8] · n=1
3GPT-5 → CadQuery
83.8
[83.8, 83.8] · n=1
4Zoo Text-to-CAD
83.8
[83.8, 83.8] · n=1
5Adam (CADcrush)
81.2
[81.2, 81.2] · n=1
6Claude Opus 4.7 → OpenSCAD
76.4
[76.4, 76.4] · n=1
7Gemini 2.5 Pro → OpenSCAD
72.5
[72.5, 72.5] · n=1
8DeepCAD
53.7
[53.7, 53.7] · n=1
9Trellis 3D
12.6
[12.6, 12.6] · n=1
10Spline AI
12.1
[12.1, 12.1] · n=1

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