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Build an AI tool to $42K MRR in 90 days
Starter Story reports that CJ Zafir built an AI tool to $42,000 MRR in 90 days.
- Difficulty
- AdvancedOur rating
- Time to build
- Not reportedOur estimate
- Monthly cost
- Not reported
- Revenue
- $42K MRR (reported by Starter Story)Third-party reported: Reported by a third party (interview, podcast or article); not verified by us
- Engagement
- 177,838 YouTube viewsfetched Oct 15, 2026
What they did
CJ Zafir built the AI product and grew it in three months; the video walks through how.
How it went
Reported at $42,000 MRR.
Worth knowing
Starter Story interviews the founder and shows dashboards on camera; we have not verified the numbers.
Builder recipe
Our own starting point, written from the source. Adapt it to your setup.
Stack
- LLM APIs
- Web app
- Stripe
Steps
- Pick a narrow problem people already pay to solve.
- Build the first version with your agent.
- Charge early and talk to users.
- Use the agent to ship fixes fast.
Starter prompt
List 10 tasks in [niche] that people already pay freelancers for and that an AI tool could do in minutes. Rank by willingness to pay.Tags
Read the original
- YouTube: www.youtube.com/watch?v=0T55DRYqeeA ↗ (opens in new tab) Oct 15, 2025 · 177,838 views (fetched 2026-10-15)
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