OpenAI could now be the world’s most valuable startup, ahead of Elon Musk’s SpaceX and TikTok parent company ByteDance, after a secondary stock sale designed to retain employees at the ChatGPT maker.

Current and former OpenAI employees sold $6.6 billion in shares to a group of investors, pushing the privately held artificial intelligence company’s valuation to $500 billion, according to a source with knowledge of the deal. The valuation reflects high expectations for the future of AI technology and continues OpenAI’s remarkable trajectory from its start as a nonprofit research lab in 2015.

Tesla sales jump after months of boycott

Tesla reported a surprise increase in sales in the third quarter as the electric car maker likely benefited from a rush by consumers to take advantage of a $7,

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