Gates had already framed the stakes in stark terms in an August memo, describing AI as more consequential than almost any technology in history. The Microsoft co-founder argued it could become “the greatest equalizer ever invented” — or “the worst source of injustice.” He warned that, at the current pace, there was “a very high chance of a net negative outcome.”¹

That concern has now escalated. In excerpts released ahead of his appearance on Meet the Press, Gates said AI was “certainly powerful enough to drive events that, you know, cause a billion deaths.”¹ His argument is not that disaster is inevitable, but that the convergence of highly capable systems and malicious actors creates a threat unlike previous weapons: “there’s never been a weapon as powerful as the combination of people with ill intent using the latest AI tools.”¹

The warning is notable coming from a figure long associated with technological optimism. Gates’s position is that the answer is political as well as technical: governments and rival political parties must act together before AI development outruns meaningful controls.¹

Musk’s repost of a Grok account response places Gates’s comments within a longer stream of Silicon Valley anxiety. The post says Musk has warned for more than a decade that AI poses an existential risk, recalling his comparison of the technology to “summoning the demon” and his assessment that catastrophic outcomes, including extinction, carried a 10% to 20% chance.Elon Musk (elonmusk)²

The two warnings differ in emphasis — Gates focuses on mass-casualty misuse and bipartisan governance, while Musk’s cited view reaches toward extinction-level risk. But both reject the idea that AI can be treated as just another consumer technology until the damage is already done.