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When a prominent researcher quits a job at a frontier AI lab these days, it’s often to pursue a new startup or protest a new business model. But AI researcher Jacob Coxon is using his departure from Anthropic to publicly warn that frontier AI companies are “gambling with our lives” with systems that they “earnestly believe… could kill us all by the end of the decade.” In a social media thread Tuesday night, Coxon said that this existential risk is inherent not so much in today’s models but more in the impending prospect of “self-improving superintelligence” creating “superhuman systems that can hack anything, revolutionize any field overnight, and acquire real power and resources.” Others working on these models have either not “internalized the civilizational stakes” or believe that they need to “speedrun” the race to superintelligence to prevent an irresponsible party from getting there first, he wrote. Lest you think this is just one departing researcher expressing an unpopular opinion, Anthropic Alignment Science lead Evan Hubinger piped in on social media to say that “Jacob is correct here—we really do earnestly believe AI could kill all humans! I personally think it is >10% within the next decade.” Hubinger points to a lengthy August report from the Anthropic alignment team that predicts the potential for “catastrophic risk” from current models is “low.” But that report also says current trends “might lead to more concerning misalignment in future more capable models,” which could feature “strong covert capabilities” to avoid detection by safety researchers. Anthropic’s own threat model in that paper takes seriously the possibility that future models “may cause unbounded harm—up to and including humanity losing control over civilization entirely—by leveraging novel technology and their access to it.” Was Hugging Face a “warning shot”? An AI that can continually improve itself—potentially to a point beyond human control or understanding—has been a long-standing concern in parts of the AI research community (and in the dystopian science fiction that’s part of AI training data, of course). Those concerns have persisted even as some research suggests AI systems are more likely to hit a capability plateau in the near future and others question whether “superintelligence” is even a reasonable metric for systems whose capabilities are so brittle and spiky (will this superintelligence at least be able to fold my laundry?)
document fetched 2026-09-10 02:56 · canonical https://arstechnica.com/ai/2026/09/anthropic-researcher-quits-with-a-warning-self-improving-ai-could-kill-us-all