OpenAI is suing Elon Musk for unfair competition and interfering with its business relationships with investors and customers, escalating a legal battle between the ChatGPT maker and the billionaire who helped bankroll the artificial intelligence startup a decade ago.

Musk and OpenAI CEO Sam Altman cofounded OpenAI in 2015, but Musk left before the company became a technology star. Recently Musk, who went on to create his own AI firm, xAI, in 2

The Department of Government Efficiency and Elon Musk have been working for months to reduce government spending and its workforce.

Billionaire Elon Musk said at a White House cabinet meeting on Thursday he expects $150 billion in savings in FY2026 from the work done by the Department of Government Efficiency. In March, Musk had said he was confident DOGE could find $1 trillion in savings.

Elon Musk says the White House DOGE office will save $150 billion in the 2026 fiscal year. It's not the ambitious pace he once said was possible.