Product Market Fit

Product Market Fit

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Tom Blomfield (YC) on How to Build a Self-improving Company with AI

How to Rebuild Your Company as Recursive Self-improving AI Loops, With the 5-Layer Framework YC Already Runs Internally

Guillermo Flor's avatar
Guillermo Flor
Jul 13, 2026
∙ Paid

A year ago the pitch for AI was copilots making engineers 20% more productive.

Tom Blomfield, the YC partner who founded Monzo, calls that a broken way of thinking, “like taking the old way of working and adding like a more powerful engine onto it.”

The real move is rebuilding the company itself as a set of recursive self-improving loops and YC is already running three of them internally.

Blomfield delivered a chat to a room of founders, building on ideas from Diana Hu, Garry Tan and a Jack Dorsey thread.

I pulled it apart into the exact framework, the live examples, and the org changes, so you can start building your company in this shape this week.

In this guide you’ll find:

  1. Why the Copilot Framing Is a Trap

  2. The 5-Layer Loop Behind a Self-Improving Company

  3. How YC’s Agent Fixes Failed Queries Overnight

  4. Why Tokens Replace Headcount as the Constraint

  5. How to Make Your Company Legible to AI

  6. Why Data Is Precious and Software Is Ephemeral

  7. What to Steal This Week


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