Bill Gates warns AI is 'powerful enough' to cause a billion deaths

"AI is certainly powerful enough to drive events that, you know, cause a billion deaths," Gates said. "There's never been a weapon as powerful as the combination of people with ill intent using the latest AI tools." He argued that industry self-regulation isn't enough: "You need law enforcement and the politicians to get into the discussion about what safeguards and monitoring look like. And that has to be a required thing."

Gates' comments land amid escalating warnings from inside the AI industry itself. Jacob Coxon, a rank-and-file Anthropic employee, quit his job earlier this month and accused both Anthropic and OpenAI of "gambling with our lives" by "racing toward super-intelligent AI." Another Anthropic employee has said he believes there's a greater than 10% chance AI eliminates humanity within a decade. Anthropic CEO Dario Amodei has since called for a slowdown in AI development, a position OpenAI's Sam Altman and Elon Musk have both backed.

Gates previously argued in an August 2026 essay that bad actors could use increasingly capable AI tools for cyberattacks, fraud, disinformation and large-scale harm against hospitals, financial institutions, power grids and government systems. He has said AI also offers major benefits in healthcare and education, but maintains that decisions made by world leaders now will determine whether the technology helps or triggers disaster at an unprecedented scale. More: Microsoft news.