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Grouper is a social club that sets up drinks between 2 groups of friends: 3 guys and 3 girls (or 3 guys and 3 guys, etc.). Grouper started in New York in the summer of 2011 and now organizes Groupers in major cities across the US. Members have shared tens of thousands of drinks. The company was founded by Michael Waxman, a Yale grad and developer who formerly started language-learning company Batiq, and Tom Brown, an MIT engineer who was an early employee at MoPub (acquired by Twitter for 350MM). The founding team also includes Challen Hodson and Kristen Badal. Grouper was funded by Y Combinator in the Winter 2012 batch.

At Undermind, we're building a search engine that can handle extremely complex questions. It’s geared at experts, like research scientists and doctors, who need to find very specific resources to solve high-stakes problems. We’ve rebuilt search from the ground up to address this. Our new approach employs high-quality LLMs to adaptively explore a database, mimicking how a human researcher carefully discovers information. This approach dramatically outperforms (by 10-50x) traditional keyword search and other modern AI-based retrieval methods. Our first target users are the 50 million researchers searching for scientific literature on PubMed and Google Scholar every month. We’ve have paying users across fields like medicine, ML, biotech, finance, and more.