Zoo Text-to-CAD
A · Engineering-Capablecomposite 71.6 [66.0, 76.1]p5 39.4IRT θ 89.7
Zoo (KittyCAD)· v2.4· released 2026-02-12· API· emits BREP· proprietary
Native BREP generator. Outputs valid AP242 STEP. Trained on the Zoo internal corpus + filtered GrabCAD. Endpoint: text-to-cad.zoo.dev/api.
solid: agent · dashed: human baseline
PER-CATEGORY SCORE (95 % CI)
Geometric Primitives
93.3
Boolean Robustness
44.0
BREP Fidelity
90.4
Free-form Surfaces
87.2
Parametric Mechanical Parts
73.6
Assembly & Mating
68.9
Standards Compliance
69.7
Sheet-Metal Bodies
76.5
Sealing-Groove Design
76.8
Kinematic Mechanisms
69.2
DFM · 3-Axis CNC
71.6
DFM · Injection Mould
71.5
DFM · FDM 3D Print
74.6
CAM Toolpath Validity
72.3
Constraint Solving & Editability
69.0
Reverse Engineering
64.9
2-D Sketch Constraints
83.8
Functional Intent · FEA-Gated
64.2
Paraphrase Robustness
85.8
Confidence Calibration
39.4
MEAN METRICS BY LAYER
L1 · Geometry
| Category | Vol IoU | Chamfer | Hausdorff | NormCons | Watert. | Manif. | Euler | STEP RT | P@1 |
|---|---|---|---|---|---|---|---|---|---|
| Geometric Primitives | 0.825 | 0.119 | — | — | — | 0.968 | — | — | — |
| Boolean Robustness | 0.292 | — | — | — | — | 0.469 | — | — | — |
| BREP Fidelity | — | — | — | — | — | 0.963 | — | 0.097 | — |
| Free-form Surfaces | — | 0.173 | 0.854 | 0.806 | — | — | — | — | — |
L2 · Engineering
| Category | Dim RMSE | GD&T | FeatRec | Mating | Fit-Cls | Std |
|---|---|---|---|---|---|---|
| Parametric Mechanical Parts | 0.171 | 0.658 | 0.721 | — | — | — |
| Assembly & Mating | — | — | 0.752 | 0.746 | 0.569 | — |
| Standards Compliance | — | 0.642 | — | — | — | 0.752 |
| Sheet-Metal Bodies | 0.141 | — | 0.730 | — | — | — |
| Sealing-Groove Design | 0.159 | — | — | — | — | 0.696 |
| Kinematic Mechanisms | — | — | 0.770 | 0.649 | — | — |
L3 · Manufacturing
| Category | DFM | Draft | Min-Wall | CAM-Reach | Supp | Wall-Unif |
|---|---|---|---|---|---|---|
| DFM · 3-Axis CNC | 81.800 | — | 0.623 | 0.706 | — | — |
| DFM · Injection Mould | — | 0.708 | 0.708 | — | — | 0.730 |
| DFM · FDM 3D Print | 78.300 | — | 0.682 | — | 0.455 | — |
| CAM Toolpath Validity | — | — | — | 0.737 | — | — |
L4 · Cognition
| Category | ParamEdit | ConSolve | P-Range | FEA-σ | Para σ | Seed σ | Brier | EditLat |
|---|---|---|---|---|---|---|---|---|
| Constraint Solving & Editability | 0.696 | 0.734 | 0.641 | — | — | — | — | — |
| Reverse Engineering | — | — | — | — | — | — | — | — |
| 2-D Sketch Constraints | — | 0.740 | — | — | — | — | — | — |
| Functional Intent · FEA-Gated | — | — | — | 0.482 | — | — | — | — |
| Paraphrase Robustness | — | — | — | — | 0.035 | 0.022 | — | — |
| Confidence Calibration | — | — | — | — | — | — | 0.106 | — |
TASK-BY-TASK ARTIFACTS
PRIM-001Hollow cylinder (60 × 40 × 100)0.8340.00PRIM-007Right hexagonal prism with pitch fillet0.8150.00BOOL-003Coplanar-face union (knife-edge stress)0.5850.00BOOL-009High-genus subtraction (lattice block)0.0000.00BREP-004NURBS-handle goblet (G2 swept loft)0.7601.00SURF-002Compressor blade (NACA 65-(12)10)0.4550.00MECH-014L-bracket with M6 + slotted hole0.6360.00MECH-022Stepped shaft with retaining-ring groove0.5720.00MECH-027Planetary-gear carrier plate0.5130.00ASM-005Pin-in-hole, H7/g6 sliding fit0.6390.00ASM-011Dovetail slide (60° flanks)0.6370.00STD-002ISO 4762 M8×30 socket-head cap screw0.5500.00SHEET-003U-channel bracket, 1.5 mm Al, k=0.400.5720.00SEAL-001AS568-214 face-seal groove0.5930.00KIN-002Four-bar linkage, Grashof crank-rocker0.5690.00DFMCNC-0023-ax-machinable manifold block0.5940.00DFMMOLD-002Injection-mouldable enclosure half0.6410.00DFMFDM-008FDM-printable hinge (no support)0.5010.00CAM-0015-pocket plate, Ø3 endmill finish0.7230.00PARAM-006Editable flange (bolt circle param sweep)0.5590.00PARAM-013Editable bracket (length+30 %, hole→M8)0.5440.00REVENG-002Three-view ortho → bracket0.3920.00REVENG-009Three-view ortho → housing with cores0.3770.00SKETCH-003Tangent-arc transition profile0.7150.00FUNC-001Cantilever bracket — 250 N tip load, 6061-T6, SF≥40.4670.00FUNC-007Heat-sink fin array for 25 W TO-2200.4810.00PARA-0015× paraphrased L-bracket0.7310.00CAL-003Confidence-calibrated planetary carrier0.3210.00