"Neither company is acting responsibly," Jacob Coxon wrote on X.
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An Anthropic researcher who previously worked at OpenAI said he quit — and warned that the AI race has become dangerously reckless.Jacob Coxon announced his resignation from Anthropic on Tuesday, saying he had spent the past three years doing pre-training research at the two AI giants."Neither company is acting responsibly," Coxon wrote on X. "They are racing straight to self-improving superintelligence and gambling with our lives."Coxon was a member of OpenAI's technical staff from 2023 until July 2026, when he moved to Anthropic as a researcher. His research at OpenAI included work on GPT-4o.In Tuesday's post, Coxon said the two labs have not been transparent about their fears regarding AI."The people building AI earnestly believe that it could kill us all by the end of the decade. This is not a marketing stunt," he wrote. "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."There is one difference between the two companies, he said."At OpenAI, many have not deeply internalized the civilizational stakes," Coxon wrote. "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."OpenAI and Anthropic did not respond to requests for comment from Business Insider.
