Describe the building. The AI builds it.
BIM Harness turns a written brief into a real BIM model — storeys, walls, rooms, roof and materials. Not a picture. IFC you keep working with.
For architects, engineers and developers. Nothing to install — the whole editor, AI included, runs in the browser.
from brief to the first version of the building
real entities with parameters, not pixels
AI design, editing and export in one place
everything runs in the browser
From one sentence to a finished model
Watch the AI build a building — and how you refine it by dragging, or with the next sentence.
An AI that doesn’t draw pictures. It builds models.
There are hundreds of image generators. BIM Harness is the only tool we know of that returns a complete, still-editable BIM model from a description.
- Returns pixels — a pretty visual with no geometry
- No storeys, walls or rooms you can work with
- Every change means regenerating and hoping
- Moving the output into a project starts from zero, by hand
- Returns an IFC model — storeys, walls, windows, spaces and the roof
- Every element is a real entity with parameters and a material
- Refine it by dragging in the editor, or with the next sentence to the AI
- Export to open IFC — Revit, Archicad and your CDE pick it up
The output isn’t inspiration. It’s a project in progress.
How it works
Four steps from a brief to a model that goes straight into design practice.
Describe the building
In your own words: “Apartment building, four storeys, twelve flats, gable roof, basement storage.” The more detail, the more precise the design.
The AI builds the model
Within minutes you get a complete BIM model — layout, structure, openings, roof and materials.
Refine it in the editor
Move walls, swap windows, add equipment from the catalog. Or tell the AI what to change and it does it.
Export the IFC
An open format with no locks. The model carries on in Revit, Archicad, viewers and your CDE.
Everything BIM Harness can do
AI design is just the start. Underneath sits a full BIM editor.
AI design of a whole building
A written description becomes a complete model: storeys, room layout, structure, openings and the roof.
Iterate with the next sentence
“Add a storey.” “Enlarge the south-facing windows.” The AI updates the model and you see every version side by side.
Editor in the browser
Walls, windows, doors, stairs and roofs. Drag from the palette, smart snapping, precise dimensions.
Realistic materials
Textures and materials in one click. The design looks like a building, not a wireframe.
Equipment catalog
Commercial kitchens, hotel rooms, medical practices. Ready-made fit-out that drops into the model with its relations.
2D sketching and CAD
Plan-view drawing, dimensions and exact geometry where you need it.
Scripting API
Batch model edits by script — the same API the AI agent itself drives the editor with.
Open IFC
No proprietary format. Export at any time, with no locks and no data loss.
Connected to a CDE
Share the model with your team, version it and comment on it in the Conexium CDE.
A look inside the editor
From the generated design to detailed edits — all in one browser window.
Who BIM Harness is for
For everyone who needs a real model out of an idea, fast.
Pricing
Monthly packages with credits. 100 credits ≈ 1 million tokens ≈ 5 building designs.
Start
For individuals and first projects
- Full editor and IFC export
- AI designs and iterations on the model
- Realistic materials and catalogs
- E-mail support
Studio
For practices that design every week
- Everything in Start
- Project sharing across the team
- Priority support
- Scripting API
Max
For studios running non-stop
- Everything in Studio
- Discounted credits: 100 for 32 €
- Onboarding with our team
- Early access to new features
Out of credits? Top up any time.
Credits track actual AI usage — you pay for what you use, just like API pricing. When the monthly allowance runs out, buy more by the hundred and keep working.
On the Max package the discounted top-up rate applies permanently — it pays off for anyone generating more than a few designs a week.
Not sure which package fits? Write to us — we’ll walk through your workload and recommend one.
We are not registered for VAT — the prices shown are final.
Frequently asked questions
Didn’t find your answer? Write to us — we’re happy to show BIM Harness live.
Build your first building today.
Write to us — we’ll set you up with BIM Harness, walk you through your first design and help you pick the right package.
Let's schedule a meeting
We'll reply within 24 hours. No commitment.