Push a face like a sketch, constrain it like an engineer, then send out the drawing, the stress study, the G-code or the joinery file. One studio on an exact B-rep kernel — with an AI agent that can use every tool you can.
Most tools make you choose: a sketcher that cannot hold a tolerance, or a parametric modeler where nothing moves until everything is declared. Kozorosa is both, on one timeline — and it keeps going after the model is done.
01 — Model
Direct and parametric
SketchUp's tools and inference for speed; constrained sketches, solid features and a timeline you can roll back for precision.
Every picture here is the application with a real model open — the same file you could open, measure, section and export. Helicopters, robots, engines and houses: the same modeler for all of them.
The radial engine's crankshaft is driven through two full turns, one degree at a time. Pistons, master and link rods, cams, pushrods and all ten valves follow their joints, and clash detection runs alongside.
Joints and links — revolute, slider, gear and cam — picked on the real geometry.
Charts and traces of any joint, and clashes reported the moment they happen.
Out as video or animated glTF. This film is the study exported as animated glTF, two degrees a frame.
Every operation in Kozorosa is an action in one catalogue — the interface calls it, and so can an agent. The built-in assistant models with you; Claude Code, Cursor, Codex and other agents connect over MCP in one click.
AI mode. Put the tools away and describe the part: the assistant plans it, asks about the design, builds it and checks it while you point, orbit and measure.
Proposals, not surprises. An agent's change appears as a ghost in the viewport; you approve or reject it.
Skills. Teach it your way of working — your organisation's, or your own.
Python. A console runs a script against the model as one edit and one undo step.
Pick AI mode. The rail goes away; a thin bar keeps Select, the camera tools and the measuring tools, and the assistant opens docked beside the view. On an empty model, a card asks what you want to design and offers a few starters.How to
Construction modules
The trade, built into the modeler.
Optional modules that know a trade's catalogues, rules and machines: real sections and grades, joints and connections, code checks, and the files the workshop's machines read.
Kozorosa for Mac is the whole studio on your own machine — the kernel, the database and the server inside the app, your files on your disk. Teams that want the web version run Foundry on their own infrastructure.
Kozorosa for Mac
Apple silicon. Windows and Linux are on the way. Every tool of the studio, offline, with your models on your disk.
€13 a month, €130 a year, or €229.99 once, for good
Short articles with a picture at each step, taken in the application by our help recorder — which also checks that each one still works on the current version.
Orbit, pan, zoom and standard viewsTurn, slide and zoom the camera around your model with the Camera tools, and jump to a standard view (Top, Front, Iso…) from the bar above the view.
Cut the model with a section planeA section plane slices the view of your model so you can see inside it — holes, pockets and wall thicknesses — without changing the geometry.
Apply a material to a bodyMaterials give bodies their colour and finish — oak, steel, glass, brick and more. Add one from the library in the Materials panel, then paint it onto a body.
Roll back, edit and suppress steps on the timelineThe timeline under the view lists every step that built your model, in order. Click a step to see the model as it was then, change a step's numbers and everything after it rebuilds, or suppress a step to try the model without it.
Draw lines and close a faceLine draws straight edges point by point on the ground or on a face. Bring the last point back to the first and the closed loop becomes a face you can push into a solid.
Draw a rectangleRectangle draws a four-sided face from two opposite corners, on the ground or on any flat face. Type the width and height to make it an exact size.