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.

Altman responds to Musk's claim in a federal racketeering lawsuit that OpenAI investors must agree not to invest in rivals: "That is false."

At the heart of the dispute is a 2017 internal power struggle at the fledgling startup that led to Altman becoming OpenAI’s CEO.

A federal judge weighed in Tuesday on a long-brewing legal feud between billionaires Elon Musk and Sam Altman over OpenAI, suggesting she’s unlikely to halt the company’s plan to restructure for now.