interior designby kasra shafiee
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5 min read

What AI in 3D Rendering Actually Does (and Where It Still Falls Short)

A client asked me last month if I could just “AI” her kitchen remodel instead of building a full render. I get some version of this question almost every week now, so I figured it was time to actually write down where AI in 3D rendering helps, and where it doesn’t.

Short version: I use AI tools constantly these days. Just not the way most people picture.

A kitchen with a dining nook split in two: on the left the untextured gray 3D model with wireframe edges, on the right the finished photorealistic render.
From gray 3D model to finished render. AI-generated illustration: look closely and the two halves don’t quite line up.

Where AI in 3D rendering actually helps

The honest answer isn’t in creating a render from scratch. It’s in the boring middle part of the job. Denoising a rough draft, cleaning up a preview pass, upscaling an image for print – that used to eat hours out of my week. Now it takes minutes. That’s real time I can spend getting the lighting right, or trying a second material option the client didn’t ask for but will probably like better.

The same living room render twice: on the left a grainy draft full of render noise, on the right the clean result after denoising.
A grainy draft render and the same frame after denoising, the tedious part that now takes minutes. AI-generated illustration.

I also lean on generative tools early on, before any 3D model exists. If someone’s deciding between walnut and white oak cabinetry, I can put together quick visual references in minutes instead of digging through stock photos that never quite match what they have in mind.

AI-assisted 3D architectural visualization of a modern courtyard by Kasra Shafiee
An AI-accelerated draft still gets finished by hand before it goes to a client.

Where it still falls apart

Type “modern living room interior” into any AI image generator and you’ll get something that looks great as a thumbnail. Look closer and the problems show up fast: a door that opens into a wall, a shadow falling the wrong way, a countertop that’s basically floating. These tools have seen a lot of pictures of rooms. They don’t understand how a room actually goes together.

That gap matters a lot in my line of work. When a developer is presenting a lobby design to investors, or a homeowner is choosing finishes for a renovation, the render isn’t just a mood image. It’s a promise about what’s getting built. If it’s wrong, that becomes everyone’s problem later.

When a quick AI image is enough

To be fair to the tools, a generated image is sometimes all you need. I use them for:

  • Early direction. Finding out whether a client leans toward warm and minimal or dark and moody, before anyone draws a line.
  • Mood boards. Pulling a palette and a feeling together for a first meeting.
  • Quick variations. Trying five versions of an idea that would take hours to model.

It stops being enough the moment the image has to match something real: the dimensions of your room, a specific tile or faucet, or several views of the same space that have to agree with each other. That’s where a modeled 3D rendering takes over.

The AI tools I use, and what each one is good for

People searching for AI 3D rendering usually want to know which tool to use. No single tool does the whole job. Here is what I use, and where each one stops being useful:

  • Midjourney for early direction and mood boards. It gives five takes on “warm and minimal” or “dark and moody” in minutes. It can’t match your floor plan, a specific tile, or a second view of the same room.
  • Google Gemini for explaining ideas, like the illustrations in this article. Good for showing a concept, not your actual space: look closely and the details don’t line up.
  • Runway for turning a still image into a few seconds of motion for a social post. It invents what the camera sees, so it’s no substitute for a walkthrough made from the real model.
  • The AI denoiser in Corona Renderer for drafts. It cleans up a grainy preview in seconds, so you see a clear draft sooner and changes come back faster.
  • AI upscaling for print and large screens, when a finished render needs to be bigger than it was rendered.

One tool that isn’t AI: for walkthrough animations I use Unreal Engine, a real-time engine that shows the actual model, so every frame matches the plan.

How AI in 3D rendering fits into my actual process

A 3D visualization workstation: a monitor showing a living room in a 3D modeling program, a printed floor plan, and oak, stone and fabric samples on the desk.
Real dimensions, real plans and real material samples come first. AI-generated illustration.

Every project still starts with real dimensions and real materials, modeled the way I’ve always modeled them. AI speeds up the parts of the process that were always just tedious. The parts that take actual judgment – proportion, mood, how a space will feel when someone actually walks into it – stay exactly where they’ve always been: with me.

Fourteen years of doing this by hand, plus a few award nods along the way (ArchDaily, the A’ Design Award, IDA Master Prize), taught me something simple: clients aren’t really paying for pixels. They’re paying for someone who can look at a space and know it’s right before it gets built.

3D interior visualization of an open kitchen and living room by Kasra Shafiee
Real dimensions, real materials, then AI for the parts that were always just tedious.

Questions people ask me about AI 3D rendering

Can AI turn my floor plan into a 3D rendering?

Some tools can turn a plan into a convincing picture, but they guess at ceiling heights, windows and fixtures, and the same room rarely looks the same from one view to the next. I build the model from your plan first, then use AI to speed up the drafts and the finishing.

Does AI make 3D rendering cheaper?

A little, in the steps it speeds up. Most of the work in a render is still building an accurate model and making design decisions with you, so a still image usually costs $250 to $350. I wrote up what actually changes the price of a render if you want the details.

Is an AI image good enough to show a builder or an investor?

Not on its own. A builder needs to trust the sizes, and an investor needs to trust that the design can be built. An AI image has no dimensions behind it. A render built from your plans does, though it’s still a presentation image, not a construction drawing.

Do you still model every project in 3D?

Yes. Every image I deliver comes from a 3D model built to real dimensions, with real materials and lighting. AI helps with the slow, repetitive steps around it. The services page shows what each project includes.

What is the best AI tool for 3D rendering?

It depends on the job. For early ideas and mood boards, an image generator like Midjourney is quick. For images that have to match a real room, a product or a set of plans, the best result still comes from a modeled 3D rendering, with AI denoising and upscaling speeding up the finishing.

If that’s the kind of visualization you need for a renovation, a new build, or a pitch to investors, get in touch and I’ll put together a free estimate.

Need visualization for a renovation, a new build or a pitch to investors?

Kasra Shafieezadeh
Kasra ShafieezadehMaster of Architecture & interior designer · 3D visualization, VR walkthroughs, AI-assisted design