Sam Altman, CEO of OpenAI, is pictured on Sept. 25, 2025, in Berlin.Florian Gaertner | Photothek | Getty ImagesOpenAI is telling investors that it's now targeting roughly $600 billion in total compute spend by 2030, months after CEO Sam Altman touted $1.4 trillion in infrastructure commitments. The artificial intelligence company is providing a lower number and more defined timeline for its planned spending, sources told CNBC, as broader concerns mounted that expansion ambitions were too great f...