Interior AI
$45K+/month MRR at >99% gross margin, part of levelsio portfolio
Dutch serial indie hacker, creator of Nomad List, Remote OK, Photo AI, and 70+ projects. Runs everything solo, no employees, no investors.
Pieter Levels began experimenting with Stable Diffusion weeks after its open-source release. After building 'This House Does Not Exist' (featured on ArchDaily within a day), he noticed the model was good at interior redesigns and shipped Interior AI in ~5 days on September 23, 2022.
The Receipt
“results are extremely terrible. The output has almost nothing to do with the input”
“A year ago I was playing around with Stable Diffusion and found it was quite good at redesigning interiors if you submitted a photo of your interior with it. I quickly spun up an MVP.”
— @levelsioThe Journey
Growth trajectory — click a dot to jump
- Sep 2022
other Levels builds 'This House Does Not Exist' with Stable Diffusion — featured on ArchDaily within one day.
- Oct 2022
press Show HN: levelsio posts Interior AI. Critics call output quality 'extremely terrible.' App generates first paying users regardless.
- Oct 2022
milestone $1,000/month MRR confirmed publicly — HN thread surfaces the milestone.
- Sep 2022
What they said
“results are extremely terrible. The output has almost nothing to do with the input”
What happened
Interior AI launches publicly (September 23). MVP built in ~5 days.
September 2022
Criticism → Reality - Mar 2023
other HN comment notes 'Lots of clones' — signals market validation and competitor pressure.
- Oct 2023
milestone $600,000 in annual revenue.
- Dec 2023
launch Levels demos interior-design-sketch-to-video capability on X — expanding product surface.
- Feb 2024
launch Interior AI 2.0 launches on Product Hunt (275 upvotes): 50+ styles, 3D depth perception, flythroughs, and Virtual Staging mode for real estate agents.
- Mar 2024
milestone Levels tweets: >99% profit margins, $200/month GPU bill, 21,000 renders/month, ~$45K MRR. HN thread debates the margin claim.
- Apr 2026
other Still actively shipping: auto-refund system, fraud detection, Gaussian Splat viewer, World Labs API for 3D walkthroughs.
Outcomes & Insights
Latest outcome
March 2024
MRR / margin
$38,000–$45,000/month, >99% gross margin, ~1¢/render GPU cost
Pieter Levels' 500K+ Twitter following providing instant launch distribution — no ads needed at launch
Viral shareable output: room transformation photos inherently compelling to share on social media
AI timing: launched days after Stable Diffusion open-source release — first polished interior AI before any competition
Real estate wedge: Virtual Staging mode targeting agents who pay $100s–$1,000s per job vs. Interior AI's $39/month
A year ago I was playing around with Stable Diffusion and found it was quite good at redesigning interiors if you submitted a photo of your interior with it. I quickly spun up an MVP.
💡 What you can learn
- Interior AI is what happens when a founder with massive distribution meets a technology wave at the right moment.
- Levels didn't invent AI image generation — he wrapped it in a specific use case and shipped in 5 days.
- The >99% margin came from $200/month in GPU costs.
Near-zero marginal cost: ~1¢/render on shared GPU infrastructure enables >99% gross margin and aggressive pricing
When they pushed back
When HN dismissed output quality as 'extremely terrible,' Levels kept shipping. Interior AI 2.0 (Feb 2024) added 3D depth perception and Virtual Staging mode targeting real estate agents — who pay hundreds to thousands per job — at $39/month.
Success patterns
See all patterns →Chat about Interior AI loads when this section enters view.