Elon Musk had sharp words for a private-sector partnership touted this week by the Trump administration to hasten the development of artificial intelligence infrastructure. “They don’t actually have the money,” Musk said of two of the participants in the $500 billion initiative, OpenAI and SoftBank, on his social media site X.

OpenAI’s Sam Altman responded to Musk’s allegation that ‘they don’t actually have the money’ by calling him “the most inspiring entrepreneur of our time.”