EX3D Studio Open the Studio

EX3D Studio · architecture in the browser

Draw it. Build it.
Render it.

Plans in real millimetres, a 3D model that builds itself as you draw, photoreal path-traced renders and presentation boards. One app, nothing to install.

or start a blank project · just look around

This picture: path-traced in EX3D Studio, 1920 × 1080

What it does

From the first line to the final render, in one place.

  1. A floor plan drawn in EX3D Studio
    01

    Draw

    Walls, doors, windows, roofs and stairs on a floor plan, in real millimetres.

  2. The live 3D view
    02

    Model

    The 3D model builds itself as you draw. Walk through it, change anything.

  3. A path-traced render
    03

    Render

    Photoreal images from a GPU path tracer, with a real sun, sky and weather.

  4. A presentation board
    04

    Present

    Lay out renders, plans and notes on boards and export PDF or images.

Start

Pick where to begin. It opens ready.

Inside

A serious tool, light on its feet.

A real path tracer

Unbiased GPU path tracing checked against physics, AI denoising, a calibrated sun and sky. The light is kept in 32 bits, so you can grade a render again later.

Weather

Clear, hazy, overcast, misty, foggy. Clouds, ground fog and light shafts, the same live and in the final render.

Drafting

Walls, openings, roofs, stairs, zones and schedules. Typed lengths, a tracker, snaps.

Landscape

Thirteen tree species with photographed leaves, lawns with clumps, seed heads, ferns and fallen leaves.

Interiors & furniture

Families for doors, windows, fixtures and classic furniture. Walk through at eye height.

// an AI builds the house
EX3D.run([
  { op: 'wall', from: [0,0], to: [23700,0] },
  { op: 'roof', kind: 'flat' },
  { op: 'tree', species: 'maple' },
  { op: 'site', weather: 'damp' },
]);

Built for AI

A documented Agent API. The Farnsworth House was modelled through it, one instruction at a time.

Together

Design with your team, and with AI.

Architecture is teamwork. EX3D is built for it: one model, many people, live — and any AI model you choose as one more colleague.

Live collaboration

  • Co-editing, live. Everyone's changes appear as they happen — no "save and reload".
  • Reservations. Nobody drags what a colleague is dragging.
  • See each other. Cursors on plans and sheets, avatars walking the 3D model.
  • Talk. Chat, shared notes, audio and video calls inside the project.
  • Invite anyone. Guest links for clients — only the sheets you pick, no account needed.
  • Roles and history. Viewer, reviewer, editor, admin; named versions you can compare and restore.
Meet other visitors in the showcase

AI and MCP

  • Bring your own model. Claude, GPT, Gemini or a local model (Ollama, LM Studio) with your own key — the AI panel works with all of them.
  • Real tools, not chat. The AI draws walls, rooms, roofs and furniture through the same documented Agent API you can script yourself.
  • Agent-ready. Every tool is published as a JSON-schema tool (EX3D.tools, EX3D.call), so a browser agent using MCP can drive EX3D today; a hosted MCP server is on the way.
  • From a sketch. A photo of a hand-drawn plan becomes a model: cleaned, traced, measured.
  • Proven. The Farnsworth House showcase was modelled entirely through the Agent API.

From the maker

I'm Pablo, an architect from Colombia. Taking a design from sketch to final plans meant a messy maze of software & licenses.

I built ex3d.com to fix this: one app for drafting, modelling, & rendering.

Try the working prototype & help me build a better tool!

Come in. Try it now.

No account needed to start. Your work stays in your browser until you sign in.

Want EX3D in your practice?