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. Its meteoric rise to a $300 billion valuation has spurred many employees to leave the AI giant to create startups of their own. The hype around OpenAI is so high that some of these startups, like Ilya Sutskever's Safe Superintelligence and Mira Murati's Thinking Machines Lab, have been able to raise billions of dollars without even launching a product. But there are lots of other startups in the OpenAI mafia ecosystem. These range from AI search giant Perplexity to xAI, the new owner of X (formerly Twitter.) There's also smaller outfits with some futuristic plans, like Living Carbon, which is creating plants that suck more carbon out of the atmosphere, or Prosper Robotics, which is building a robot butler. Siblings Dario and Daniela Amodei left OpenAI in 2021 to form their own startup, San Francisco-based Anthropic, that has long...
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