How does AI interior design work?

Under the hood it is one model doing two things at once: reading your photo to understand the geometry of the space, and following a prompt that describes the look you want. The prompt always carries a structure lock, an instruction to leave the room's bones alone. That is why the result still reads as your actual living room in a new style rather than a stranger's room that vaguely resembles it. You can steer it with one of 24 designer styles, from Scandinavian to Japandi, or skip the presets and describe your own look in plain words. There is a longer walkthrough of the photo-to-render flow in our guide to AI room design from a photo.

Restyling is only one of the jobs the same mechanics can do. Change the instructions and the model will stage an empty room with furniture, declutter a messy one, swap a single material like the flooring, wall color or kitchen cabinets, or preview a renovation before you commit to it. It can also turn a 2D floor plan into a 3D render, obey freeform edits like \"paint the far wall sage green and add a reading chair by the window\", and generate a cinematic video walkthrough of the finished design. Each of these is the same photo-plus-instructions loop with a different set of instructions.

The easiest way to understand it is to run it on your own space. Upload one photo to restylai, pick a style, and about ten seconds later you are looking at your room redesigned. The first design is free with no signup, so you can judge how well it holds your walls and windows before deciding whether to keep going.