Product Market Fit | Guillermo Flor | Substack

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Recent posts

Sam Altman: "We are starting to test ads in ChatGPT" - The Ultimate 'How to Win GEO' Playbook🔥

What ChatGPT ads change for founders, marketers, and distribution

Jan 17 • Guillermo Flor

Revolut’s Seed Pitch Deck (2015): The £1.5M Slides That Created £75B

The original Revolut seed pitch deck + a practical teardown of the pitch strategy behind Revolut’s seed round

Jan 16 • Guillermo Flor

The 2025 Unicorn List: The full list & breakdown

Inside: the full 2025 unicorn list with sector analysis, rounds, and top investors

Jan 15 • Guillermo Flor

The Startup Press Access Database

500+ journalists, outlets, and a step-by-step guide to getting covered

Jan 14 • Guillermo Flor

LEAKED: The deck Yann LeCun’s startup is using to raise €500m at €3bn valuation

A breakdown of the ideas behind the deck Meta’s former chief AI scientist is using to raise €500M

Jan 13 • Guillermo Flor

Figma’s 2013 Pitch Deck: How a Demo Beat a Business Model

Inside Figma’s $3.8M seed deck: the demo-first pitch that convinced investors pre-revenue

Jan 12 • Guillermo Flor

The Ultimate Healthcare AI Pitch Deck Vault 🔥 (21 TOP VC-Backed Decks)

How the best healthcare founders pitch, think, and raise millions in 2026

Jan 11 • Guillermo Flor

The Claude Code Founder Guide

Practical Guide: How founders are actually using Claude Code to run their workflows and businesses

Jan 10 • Guillermo Flor

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