Ask HN: Why are OpenAI, Claude, and Grok simultaneously down? Coincidence?

Multiple major AI services—OpenAI, Claude, and Grok—experienced simultaneous outages, sparking speculation about the cause. Commenters on Hacker News debated whether this was coincidental or a cascading failure, with the leading theory being that when one service went down, users migrated to competitors and overwhelmed them sequentially, though some mentioned the possibility of a coordinated cyberattack as an alternative explanation.