Anthropic researcher quits, warning AI could 'kill us all'

"We're on track for a lot of the most aggressive of these scenarios where by the end of next year things could be out of control already," Coxon told The Wall Street Journal.

Industry-wide calls to slow down

Coxon's departure isn't isolated. Mrinank Sharma, Anthropic's safeguards research lead, resigned in February 2026 with a letter saying, "the world is in peril." In July 2026, more than 1,100 AI company employees signed Pacing the Frontier, a joint letter warning of a "real risk that capability development rapidly accelerates beyond our ability to understand or control the resulting systems." Signatories included Anthropic CEO Dario Amodei.

"This is a complex engineering problem and I think something will go wrong with someone's AI system. Hopefully not ours," Amodei told The New York Times in February 2026.

OpenAI CEO Sam Altman said in a July 2026 podcast interview that recent testing incidents were raising "long-term questions" about managing rapid capability gains.

"We may have to pace the rate of AI development to give ourselves enough time for society to harden around these new capability levels," Altman said.

What the regulatory gap means for employers

Despite the rising volume of warnings, meaningful federal regulation remains distant. The Trump administration has moved to undermine state AI laws and Congress hasn't passed federal AI legislation. The White House has shifted toward a voluntary review framework under which AI companies would self-assess certain models before launch, according to sources familiar with a meeting last month between administration officials and representatives from OpenAI, Anthropic, Google, and Meta.