Cat Manik, Caster, Kirsty, Justin, and Paul Buchheit describe their roles advising founders, helping with operations, and sharing company stories. The panel says Silicon Valley offers a deep pool of technical talent, experienced investors, potential acquirers, and an attitude that accepts startup risk. YC welcomes founders from many countries, though companies must be US entities for YC to invest.
Y Combinator Partners Q&A
Speakers
Cat Manik, a Y Combinator partner, moderates a Startup School Q&A in California with YC partners and founders about company building and applying to YC.
The partners value grit, conviction grounded in a real problem, and the ability to see beyond trends. YC accepts companies at different stages, from teams with an idea to startups that have already raised a seed round. They fund solo founders too, while advising applicants that finding a co-founder can help share the work and emotional strain.
The panel says founder disputes often grow from poor communication, uneven commitment, or imbalanced power, and urges teams to address problems early. They favor balanced equity because most of the work lies ahead and startups can last five to seven years. YC ended its no-idea-founder experiment after finding that applicants without an initial idea often struggled to generate later ones.
YC says it gives interviewed applicants specific feedback and welcomes repeat applications; founders can use that feedback to improve, and Dropbox co-founder Drew is cited as a rejected applicant who reapplied. The panel describes nonprofit funding as an experiment focused on scalable impact, with Watsi as an example. Living and working frugally with co-founders can help teams make limited resources last.
The closing advice includes taking practical steps to start, recognizing that entrepreneurship is not for everyone, and persisting through difficult periods. Paul Buchheit urges founders to test ideas with users before building too much: he first made Gmail search his own email, then iterated through daily user feedback. He aimed to make 100 people at Google happy users.
Takeaways
- Test whether a problem is real through direct experience and customer evidence, not trend coverage.
- Apply at the stage you are in; YC has accepted teams from idea stage through seed-funded.
- Discuss co-founder commitment, communication, and equity early, before disagreements harden.
- Share early product versions with users and improve them from specific feedback.
- Plan enough runway to act, and be honest about whether startup life suits you.
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What was claimed 12
- role atCat Manik is partner at
Y Combinator
“I'm Cat Manik, a partner at Y Combinator.”
YouTube Unverified2 sources· Talk
- role atPaul Buchheit is partner at
Y Combinator
“is also a Y Combinator partner”
0:07inChoosing a Startup to Work AtYouTube Verified7 sources· Talk
- role atCaster is partner at
Y Combinator
“I help startups through group and individual office hours.”
YouTube Unverified1 source· Talk
- role atKirsty is financial and operational partner at
Y Combinator
“I'm the financial and operational partner.”
YouTube Unverified1 source· Talk
- role atJustin is partner at
Y Combinator
“I have basically the same job as Caster, advising and helping startups.”
YouTube Unverified1 source· Talk
- previously atPaul Buchheit previously at
Meta
“I've officially been a partner since I left Facebook in 2010.”
YouTube Unverified1 source· Talk
- metric
Y Combinator: 85 companies in the current batch; nine started outside the US
“There are 85 companies in this batch, and nine of them were started outside the US.”
YouTube Unverified1 source· Talk
- metric
Y Combinator: 25 founders born in 27 different countries in the last batch
“Last batch had 25 founders born in 27 different countries.”
YouTube Unverified1 source· Talk






