From Prompt to Profit: How ChatGPT Workflows Let Me Launch 3 Startups in the USA

Artificial Intelligence, especially tools like ChatGPT, Claude, and Gemini, has completely changed what it means to be a startup founder in the United States. In 2025, I didn’t just start one company – I launched three, fully operational businesses, from scratch, in less than six months. And I did it without hiring a single full-time employee.

This is not a hype piece. It’s my real-life journey of turning a few clever AI prompts into recurring revenue – and a new way of working that I believe will define this decade.

Let’s walk through exactly how it happened – from idea validation to launch, marketing, and automation – all powered by AI workflows and prompt engineering.

The Big Unlock: Prompt Engineering as a Startup Toolkit

Forget writing code, hiring designers, or spending months building MVPs. In 2025, the new skill stack is:

• Knowing what to build
• Crafting the right AI prompts
• Linking tools like ChatGPT, Claude, Zapier, Notion, and Webflow

I didn’t have VC money, a dev team, or a cofounder. What I did have was curiosity, time, and access to Chatronix, the AI super-app that lets you run prompts across multiple LLMs like ChatGPT, Claude, and Gemini in one workspace.

Here’s how I went from idea to income – three times over.

Startup #1: Local SEO Agency (Built with Claude)

I started with this Claude prompt:

“You’re a small business marketing strategist. Design a simple local SEO agency model that can be run solo with AI tools. Include pricing, services, landing page copy, and outreach strategy.”

Claude delivered a full-service model in minutes:

• Packages for $299, $599, $999
• An email cold outreach script
• A three-page landing site template (which I built in Carrd)
• A 30-day client workflow powered by ChatGPT and Zapier

My first client came from a Reddit thread. Two more followed via cold email. Within 45 days, I had $1,800 in revenue and a working system.

Claude wrote the service agreements, SOPs, and onboarding guides. ChatGPT handled FAQs and client communication prompts.

Streamline Every Startup Workflow

I didn’t toggle between ChatGPT, Claude, and Gemini tabs. Instead, I ran every test inside Chatronix, which let me compare outputs side-by-side, save my best prompts, and deploy automations.

No fluff. Just ROI.

Try it for yourself at chatronix.ai – it’s how I scaled from solo brainstorm to systemized income.

Startup #2: AI Resume Writing Assistant (Powered by Gemini + Zapier)

Resume AI tools were blowing up. Instead of building a SaaS product, I tested a low-code MVP:

1. Built a form in Tally.so that asked users for job goals and career info.
2. Connected it to Zapier, which triggered a Gemini prompt like:

“Based on this data, generate a professional resume in US format with quantifiable results and modern formatting. Include cover letter if job title is provided.”

3. Sent results back as a downloadable PDF via Gmail.

Total build time? 4 hours. Launch? 1 Gumroad page.

I priced it at $19.95. Within the first 2 weeks, I had 76 purchases. Not millions – but proof that people would pay for AI-assisted personalization that felt human and contextual. And yes, I used Claude to help rewrite prompts when feedback came in.

Gemini was especially good at pulling in data from live job listings and tailoring resumes accordingly – a feature ChatGPT wasn’t as accurate with.

Startup #3: AI-Powered Microcourse Platform (with ChatGPT as Instructor)

Education is changing fast, and microcourses are booming. I didn’t have the time to create a huge curriculum, so I built:

• 10 bite-sized AI tutorials (prompt engineering, ChatGPT for marketing, Claude for copywriting)
• A lead magnet funnel
• A full Teachable course with ChatGPT as the primary “tutor”

Here’s the ChatGPT system prompt I used:

“You are an engaging course assistant for adult learners. Each module should include a 5-minute lesson, a real-world example, and a prompt they can try in ChatGPT or Claude.”

It worked. My first $500 came from indie hackers. My next $2,000 came via an AI learning Substack I guest posted on.

I now drip content using Claude for weekly lesson follow-ups and Gemini for smart quizzes.

ChatGPT is now sending significant traffic to my little startup.

At $3.34 revenue per visitor, it’s also one of the top converting marketing channels. pic.twitter.com/lOa7DfGw3u

— Marc Lou (@marc_louvion) June 1, 2025

What I Learned: AI Lets You Build the Business, Not Just the Product

AI tools aren’t just assistants. They are the team. Here’s what each startup taught me:

• Claude is exceptional for strategic thinking, tone, and legal polish.
• ChatGPT excels at daily operations, sales scripts, and onboarding.
• Gemini shines when working with real-time data, forms, and scheduling.

Most importantly, Chatronix let me orchestrate all three – using prompt stacks that created compounding results. I wasn’t context switching. I was scaling.

Revenue Snapshot (First 90 Days)

No paid ads. Just AI + execution.

Want to Try This Yourself?

You don’t need code. You don’t need a cofounder. You need:

1. A validated niche (Claude helps)
2. Repeatable prompts (ChatGPT helps)
3. Scalable tools (Gemini + Zapier help)

And ideally, one dashboard that runs it all.

That’s Chatronix.ai – the single smartest place to build, test, and run an AI-powered business in 2025.

Final Thoughts

We’re entering a new entrepreneurial era. If you can talk to AI, you can build a business.

So ask yourself: what idea have you been sitting on?

Now go launch it – one prompt at a time.