OpenSCAD and CadQuery

Free, open-source code-based CAD tools that language models write well.

Best for: Parametric, version-controlled designs

Pros

• Free
• Diffable and scriptable
• Fit LLM workflows

Cons

• Learning curve for manual edits

Where it fits in the playbook

• Step 2: Have a frontier model write the design as code

Visit OpenSCAD and CadQuery

Pricing, lead times and features change often. Check the provider's site for current details.