$500 Per Month SaaS Business

⁦‪@gregisenberg‬⁩ To my knowledge, this is exactly how modern SaaS gets built.

AI turns manual services into scalable software.
Start niche. Learn fast. Automate.
Leverage ChatGPT-4o image gen + smart ops = $100k/mo playbook.

Skip the bookmarks. Start building.
(And if you love AI + startup

5/5/25, 12:10 PM

If I had to build a $100k/month SaaS from $0 right now with AI, I’d build a SaaS using the NEW ChatGPT-4o image gen API….

Here’s EXACTLY how I’d do it:

Pick something valuable, tedious, visual. Maybe product mockups for Shopify sellers. Or personalized onboarding graphics for SaaS companies. Or high-quality charts for newsletters.

You launch it as a simple, manual service first. Charge $500 per month for custom images. You run the prompts yourself, messy, manual.

But you’re close to the customers. You learn what they hate, what slows them down, what actually matters.

Every request becomes research. You notice patterns. You refine your prompts until you’re generating 10/10 images every time. You create a library of proven prompt templates.

You’re sharing cool stuff on X. Maybe even collaborating with other creators, giving them free images if they put your logo on bottom right. You gain followers.

You start automating the backend. You use Bolt or Custor or Replit to build a basic frontend. Customers submit their request, your API-powered backend spits out pixel-perfect images in seconds.

Your margins explode. No designers. No revisions. You replace yourself with Claude or GPT-4o to handle revisions, Lindy or Gumloop for ops, and Stripe for billing.

Suddenly, what started as a service feels like magic SaaS. Zero-touch onboarding. Customers pay monthly for unlimited images, generated instantly via API. No friction, no waiting, pure leverage.

Now you’re onboarding dozens of new clients every week, effortlessly scaling revenue. $10k. $30k. $80k. $100k/month with you and maybe one ops freelancer managing the whole thing.

The beauty is your SaaS is just a layer on top of ChatGPT’s Image Generation API. No deep tech required, just crystal-clear use cases, good prompts, and a polished UI.

Haters will say you’re “just a GPT wrapper.”

Haters will say you’re one upgrade away from extinction.

(These haters, by the way, are usually tweeting from their mom’s basement.)

But you’re really niche and fine staying there. You’ve built a nice little cash-flowing business. Use that cash to acquire or invest in more similar businesses. You can raise money to scale or do it yourself. Whatever speaks to you.

Compound, babyyyyy!

You’ve turned a simple API call into a cash-flowing SaaS business.

That’s leverage. That’s why this API matters.

Don’t know why more people aren’t talking about this… (maybe gatekeeping?)

For more ideas, you can search for startup ideas podcast and share this tweet to find people into this sorta stuff.

Please don’t bookmark this tweet. Instead, ship something.

ChatGPT 4o image gen will fuel 1,000+ new SaaS businesses.

Am I wrong thinking this?

I’m rooting for you