Mr. Musk’s public expression of regret was another sign of a potential thaw in the standoff with the president.

Republicans are less enthusiastic about Musk after his feud with Trump, a new AP-NORC poll finds.

Fidelity, a previous investor in Mr. Musk’s companies, is purchasing $20 million worth of shares in the deal, which values xAI at $113 billion, the documents show.