VERONICA

Your agent just built
a real robot.

Veronica hands any AI model real parts and a geometry kernel that checks every fit. Below: the proof.

ai robot demos todayfiction
Spinning shapes with made-up proportions. A toy.
built with veronicaverified
A real drivetrain — 37 genuine VEX parts, frame bolted together, designed by the smallest Claude model. Drag to orbit.
666 clearance checks 0 collisions 8 verified bolted joints 0.055 mm measured fit
What it costs
47,000 tokens.

That's the whole design session for the smallest model. The biggest models, working alone, burn millions — and still can't check a single fit.

Claude Fablefrontier, working alone
9,100,000
GLM 5.3frontier, working alone
11,000,000
Haiku × Veronicasmallest model
47,000

Measured sessions. Same task, same parts, same finished robot.

See it think

Watch Haiku's session

A recording of the actual design session by claude-haiku-5-5 — the smallest model in the Claude lineup — condensed for length, numbers unedited.

recording · claude-haiku-5-5 · 2026-10-30paused
// This is a recording of a real session, not a live agent. Press play.
the resultkernel-audited
The robot that session paid for — real parts, every fit measured. Drag to orbit.

The harness is model-agnostic and open source (MIT): six plain function calls, so any tool-calling model can design through it — open models included.

GLMDeepSeekQwenLlama KimiMistral…and yours

Get the harness on GitHub →