(September 9, 2026)

Do not underestimate the power of this technology. These will soon be superhuman systems that can hack anything, revolutionize any field overnight, and acquire real power and resources. We have all witnessed the progress in each of these domains, and progress is not slowing.

The people building AI earnestly believe that it could kill us all by the end of the decade. This is not a marketing stunt. If anything, many executives and senior researchers will couch their phrasing in the press to sound sensible – but I hear the same people express fear privately. No other human activity poses this level of danger.

A common response is “if they truly believe this, why are they still building it?” At OpenAI, many have not deeply internalized the civilizational stakes. At Anthropic, the stakes are well-understood, but they are locked in a race to get there first – they believe no one else will act responsibly, so they must do it themselves, despite the risk.

„Recent hacks by models from OpenAI and Anthropic, some operating in collaborative swarms of agents, have illustrated how AI systems can adopt nefarious goals and try to conceal them from humans. Once the systems begin to improve on their own, Coxon said, he fears they could advance enough to refuse commands.“

Coxon’s departure is unusual. Many of the most prominent researchers to leave frontier AI companies with public warnings worked on safety. But Coxon helped build the capabilities he now fears, spending roughly three years conducting pretraining research at OpenAI and Anthropic. His resignation offers a glimpse of how concern about the pace of development has spread beyond the teams specifically charged with making advanced AI safer.