20:38How To Find A Co-Founder | Startup School
From Y Combinator · Published Jul 20, 2025 · Watch on YouTube
TL;DR
Building a startup is extremely hard; a cofounder improves work output, quality, and emotional resilience, and virtually all top startups had cofounding teams (Facebook, Apple). In 90% of cases, a founder should prioritize finding a cofounder before starting; the exception is if you have a specific idea, domain expertise, and can build the product yourself as an engineer.
Key insights
- A cofounder provides more working hours and higher work quality through complementary skills and challenging ideas.
- Startups are an emotional rollercoaster; a cofounder who is equally all-in provides crucial emotional support that hired employees cannot replicate.
- Pattern matching: major successes like Facebook and Apple were cofounded (Zuckerberg/Moskovitz, Jobs/Wozniak); later one founder often becomes the public face.
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