October 7, 2025 at 8:00 PM UTCUpdated on October 8, 2025 at 12:05 AM UTCTwo weeks ago, Nvidia Corp. agreed to invest as much as $100 billion in OpenAI to help the leading AI startup fund a data-center buildout so massive it could power a major city. OpenAI in turn committed to filling those sites with millions of Nvidia chips. The arrangement was promptly criticized for its “circular” nature.This week, undeterred, OpenAI struck a similar deal. The ChatGPT maker on Monday inked a partnership with...