The 90-Second Preview Test
Everyone’s pitch now includes the word “live.” Here’s the one check worth running before you believe it.
Real-time engines, AI-assisted previews, instant walkthroughs — the promise behind all of them is the same: see the design today, not in three weeks. That promise is mostly true now. Speed stopped being the hard part a while ago.
Which is exactly why speed was never the actual bottleneck in a design review. The bottleneck was always simpler: is everyone in the room looking at the same building?
“Live” and “accurate” are two different promises
A generic preview engine — or a demo clip generated from a prompt — can move a camera instantly around something. That something isn’t automatically the model you drew. Ask for “your kitchen” and a stand-in scene renders a kitchen: the counter run, the window count, the ceiling height are all negotiable the moment nobody is checking them against a real sheet.
A fast preview that’s generic answers “is this a nice room.” A design review needs the answer to a different question — “is this the room” — and only a preview built from your own model can honestly answer it.
A live preview is only worth the ninety seconds if it’s live inside your model — not live inside someone else’s.
The 90-second test
Before the next “watch this live preview” lands in your inbox, run three checks. They take less time than the clip does.
- Built from your model, not a stand-in scene. Ask what it’s actually rendering — your drawings and finish schedule, or a library scene with your materials painted on top. If nobody can answer clearly, assume the second.
- The room, not just the render. Can you and the client stand at the same spot and both point at the same wall, live? A clip you each watch separately isn’t a review. It’s a video.
- A material swap moves the geometry it touches. Change the counter and the grout lines, reveal depth and reflection should shift with it — not just the surface colour. That’s the difference between a scene you can trust and a screenshot with a filter on it.
We build the kind of preview that passes this test: real-time review straight from the model your design actually lives in, navigable at full scale, materials that update the geometry they touch, and a browser link when nobody in the room owns a headset.
