Mercor, a startup that has become a critical component in the ecosystem improving top AI models, finalized a new funding deal that would value the company at $10 billion, people familiar with the matter said.

That is five times the value the company had in February before it pivoted to one of the more lucrative arenas in the artificial-intelligence boom: hiring thousands of white-collar professionals to train the very machines that could one day replace and augment their work.

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