Lessons from working with 600+ YC startups | Gustaf Alströmer (Y Combinator, Airbnb)

Gustaf Alströmer is a Group Partner at Y Combinator, where he has worked with over 600 startups. He’s also a fellow Airbnb alumnus and even started the original Airbnb growth team. In today’s podcast, Gustaf discusses common reasons startups fail and how he helps coach founders on avoiding these mistakes. He explains the attributes that the best founders tend to have, and signs that a company has potential. We also cover the growing space of climate tech, for which Gustaf has a huge passion and where he’s already had an incredible impact. He shares some key areas of innovation and investment in climate tech, some notable companies he’s helped fund, and where he sees potential going forward.

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Uploaded Jun 14, 2026

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