Sam Altman has denied Elon Musk's claim that OpenAI bars investors from investing in competitors."That is false," Altman said Thursday in a sworn statement to a California judge.He said investors were told only that they'd lose OpenAI data access if they invested in a rival.

A drawn-out legal fight looms for Elon Musk and Sam Altman as they face an increasingly long courtroom battle over the future of OpenAI while also taking potshots at each other on social media.

Lawyers for Musk asked a federal judge to block OpenAI’s plan to become a for-profit entity in a highly anticipated court hearing on Tuesday.