Elon Musk's artificial intelligence startup xAI is raising more financing than initially planned, tapping backers including Nvidia to lift its ongoing funding round to $20 billion, according to people familiar with the matter. Nvidia is investing as much as $2 billion in the equity portion of the transaction, the people said. Bloomberg's Annabelle Droulers reports. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on notifications so you don't miss any videos