A recently completed stock deal saw OpenAI's valuation surge to $500 billion and become the world's most valuable private company, according to a report.Current and former OpenAI employees sold about $6.6 billion in shares to a consortium of investors that included Thrive Capital, SoftBank, Dragoneer Investment Group, Abu Dhabi's MGX and T. Rowe Price, according to Reuters, citing a source familiar with the matter. The deal valued the ChatGPT-maker at $500 billion – well above the previous valuation of $300 billion, which was the prevailing level for a $40 billion capital raise that was led by...

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