Built here. Go anywhere.

An American-built quadruped.
Ready for your code.

From $2,995 · Open Source SDK
Simulation
Zeronce Quad, rendered from the actual CAD assemblyPreparing the hardware
Zeronce Quad, rendered from the actual CAD assemblyPreparing the hardware

Driven
by tension.

The motor turns the small drum. Tensioned rope drives the larger drum—and the leg.

9:1Nominal reduction

Some things are worth building here.

Made in the USA

American-built hardware.
From the mechanism to the machine.

Choose what
you can build on.

Side profiles. Same scale.

Robot size, price and capabilities
Unitree

Go2 Pro

$2,800

Zeronce

Quad

From $2,995

Boston Dynamics

Spot

Contact sales

Payload
8–10 kg25 kg20.43 kg
Development access
Not on ProOpen Source SDKSDK available
Sources & specification notes

Diagram dimensions are length × height. Quad follows the current modular CAD pose. Go2 and Spot outlines are scaled to their published standing dimensions; Spot uses its 61 cm default walking height. Model credits and licenses.

Zeronce’s price, 25 kg payload capacity and 60 cm drop with 10 kg onboard are founder-provided specifications. Quad is in development; the motion scenes are simulations.

Go2 Pro specifications: price excludes tax and freight. Development access differs by trim; EDU supports secondary development.

Spot specifications: 20.43 kg is the current maximum recommended payload; placement can affect performance. Payload ratings are not measured under identical conditions.

Spot SDK is available under Boston Dynamics’ license. Joint-level control requires a separate license. Contact Boston Dynamics for pricing.