Kerto AI LogoKERTO AI
The 21-Day path from dreamer to AI founder

Take your AI idea to market in just 3 weeks

Got a brilliant idea but worried it will take six months and a six-figure budget to build?

We ship a focused, user-ready MVP in 21 days for a fixed price so you can stop talking about your vision and start showing a real product.

Book a 30-minute discovery call. Let's explore your vision and determine if we're the right partners to bring it to life.

Trusted by
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Selected Work

Trusted by first-time founders and Fortune 500 companies, we combine disciplined product strategy with AI-powered engineering to take your idea to market in weeks, not months.

WarrenAI for Investors

CheckFit Virtual Try-On

BloomChat AI for MSPs

Airstream RAG for Customer Support

xMagic - E2E Enterprise AI Agent Platform

MakingWeb Support Automation

Founder-First Approach

Your vision deserves more than a standard agency playbook. We deliver clarity, speed, and founder-level AI expertise — without the usual headaches.

Others

  • ✗Endless hourly billing → costs spiral out of control
  • ✗Floating deadlines → your launch date is a suggestion
  • ✗Generic dev teams → no deep AI product expertise
  • ✗Paralyzed by ambiguity → endless meetings

Kerto

  • ✓One fixed price → no surprises, ever.
  • ✓21-day guaranteed delivery → we work for free if we're late.
  • ✓AI founder-led team → worked with 15+ startups
  • ✓From napkin sketch to MVP → we thrive on your vision

Why 21 Days?

AI development is a different beast.
What took teams 6 months now takes us weeks. We use AI to build AI. We leverage AI-assisted code, custom automation, and a library of pre-built components to ship at ludicrous speed.

The #1 startup killer? Overbuilding.
Spending months on features nobody wants is a fatal error. 21 days is the perfect constraint. It forces ruthless prioritization to build what truly matters, get it into users' hands, and find signal in the noise.

Phase 1: Day 0

  • Initial fit call → scope via short calls/docs
  • Slack + weekly calls scheduled
  • Scope lock + fixed price

Week 1: Sprint #1

  • Architecture in place
  • Minimal APIs testable locally
  • Kick-off + end-of-week review

Week 2: Sprint #2

  • Minimal UI + landing
  • ~80% API complete
  • AI implemented/fine-tuned
  • Core flows ready to test

Week 3: Sprint #3 & Hand-off

  • Complete MVP per scope
  • Payments/pricing wired
  • Docs + launch plan
  • Hand-off or next steps

Phase 2: Iterate & Grow

  • Dedicated support for bug fixes & tweaks
  • Growth Sprints based on real user feedback
  • Technical roadmap & scaling plan

Testimonials

Simone Lini

Simone Lini

Head of BD & PM @ Google Travel

I had the pleasure of working with Sarthak and his team on an MVP to validate a business idea. I’m extremely happy with the experience. Sarthak knows how to ship fast and is proactive in identifying and clearly explaining the trade-offs behind technical decisions. Overall, working with him felt almost like working with a cofounder.
Skanda Bhat

Skanda Bhat

Technical Lead @ Razor Network

His work ethic, attention to detail, and bias for action makes him stand out from the rest as he brings in expertise in technical architecting and project management. Would highly recommend working with him on ML/AI, and end to end product development.
Siddarthan SP

Siddarthan SP

Staff Backend Engineer @ Automattic

Sarthak is a thorough purist and never hacks around to get things done. He believes in going deep and doing things the right way. And, many of his insights during code reviews has made many engineers better.

Frequently Asked Questions (FAQ)

Ready To Build?

We take on only a handful of new projects each month to guarantee success. Is yours one of them? Book a 30-minute discovery call to find out.