Move over, PayPal mafia: There’s a new tech mafia in Silicon Valley. As the startup behind ChatGPT, OpenAI is arguably the biggest AI player in town. The company is reportedly now in talks to finalize a $100 billion deal, valuing the company at more than $850 billion.

Many employees have come and gone since the company first launched a decade ago, and some have launched startups of their own. Among these, some have become top rivals (like Anthropic), while others, just on investor interest alone, have managed to raise billions without even launching a product (see, Thinking Machine Labs).

In January, Aliisa Rosenthal, OpenAI’s first sales leader, spoke a little bit about this growing network. She, like the other OpenAI alums who did not become founders, decided to become an investor and said she was going to tap into the ex-OpenAI founder network to look for deal flow. We know Peter Deng, OpenAI’s former head of consumer products (and now general partner at Felicis) already has.

Below is a roundup of the major startups founded by OpenAI alumni, in alphabetical order. And we are certain this list will grow over time.

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