CAD Skills vs Clark Labs: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of CAD Skills and Clark Labs — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
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CAD Skills
earthtojake
Open-source library of agent skills for CAD, robotics, fabrication, and simulation — generate STEP/STL, URDF/SRDF/SDF, DXF, and slicer G-code from prompts.
Key features
- Prompt-to-CAD Generation: The CAD skill creates and edits parametric CAD models from natural language or image requests, exporting to STEP, STL, 3MF, and GLB.
- URDF Robot Description: Writes robot structure files with links, joints, limits, inertials, and meshes ready for ROS-based stacks.
- SRDF for MoveIt2: Adds planning groups, end effectors, named poses, and collision rules on top of a URDF for MoveIt2 planning.
- SDF Simulation Worlds: Creates simulator models and worlds with frames, physics, sensors, and lights.
- 2D DXF Drawings: Produces cut-ready DXF profiles, templates, gaskets, and layouts from Python or CAD geometry.
- G-code Slicing: Slices supported mesh files into validated, printer-profiled FDM G-code using real slicer CLIs.
- Bambu Lab Print Jobs: Dry runs, uploads, and cautiously starts local Bambu Lab prints from validated G-code.
- CAD Viewer Previews: Local browser previews for CAD, G-code, URDF, and other robot files for fast agent iteration.
Best for
- Agentic Mechanical Design: Let a coding agent iterate on brackets, flanges, and enclosures directly from natural-language specs.
- Robot Description Authoring: Generate URDF/SRDF/SDF files for new robot arms or mobile bases without hand-writing XML.
- Rapid Prototyping: Take a CAD model to sliced, printer-ready G-code and kick off a Bambu Lab print from within an agent workflow.
- Custom Part Fabrication: Produce DXF/STEP files pre-checked for SendCutSend, then order laser-cut or CNC parts.
- Simulation Setup: Author SDF worlds for physics simulators with the right frames, sensors, and lighting for robotics research.
- Off-the-Shelf Sourcing: Use step.parts to pull ready-made STEP models for common hardware like screws, bearings, and connectors.
Clark Labs
Clark Labs
Clark Labs is an autonomous AI lab shipping Clark Agent (computer-use), Clark Hash (memory), Clark Air (compression), and Clark Code (macOS coding IDE).
Key features
- Clark Agent (Computer Use): Autonomous computer-use agent that operates the browser and desktop apps to run real workflows.
- Clark Hash (Memory Layer): AI memory layer intended to give agents durable context across sessions and tasks.
- Clark Air (Model Compression): In-house model compression stack aimed at cheaper, faster inference at 'the cost of electricity.'
- Clark Code (macOS Coding IDE): A dedicated AI coding IDE for macOS with BYOK support for eligible providers.
- Android Availability: Clark Agent ships as an Android app in addition to the web/launch experience.
- Autonomous R&D Loop: Marketing and product design revolve around AI loops doing engineering/research, with humans providing feedback rather than commits.
- Seat-based Team Plans: Team offering provides shared credits and org-level billing controls on top of individual plans.
Best for
- Autonomous Web/Desktop Task Execution: Delegate multi-step browser or desktop workflows to Clark Agent instead of scripting them.
- Persistent Agent Memory: Use Clark Hash to give agents long-lived memory that survives across runs and tools.
- Cost-Sensitive Inference: Deploy compressed models via Clark Air where inference cost is the binding constraint.
- AI-First macOS Coding: Use Clark Code as a dedicated agentic IDE on macOS, optionally with your own API keys.
- Team Automation Rollouts: Adopt seat-based Team plans to give an organisation shared credits and centralised billing.