Guido Appenzeller on X: “Congrats @drfeifei, @BenMildenhall, @jcjohnss and @martin_casado ! Woh…”

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Guido Appenzeller

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Congrats @drfeifei, @BenMildenhall, @jcjohnss and @martin_casado ! Wohoo!

martin_casado@martin_casado · Sep 28

I don’t normally write these things. But this one hits a bit different. Nearly three years ago I told a16z I wanted to spend part time outside the firm helping @drfeifei start and build a frontier model company. And what followed were some of the most remarkable moments of my

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Sep 28, 2026, 8:26 PM UTC

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Guido Appenzeller on X: “Congrats @drfeifei, @BenMildenhall, @jcjohnss and @martin_casado ! Woh…” | PeekX