
Jacob Coxon, a researcher who trains AI models, announced his resignation from Anthropic Tuesday night in a series of posts claiming that AI companies are approaching an "endgame" race that could kill us all.
"I spent the last three years doing pretraining research at both OpenAI and Anthropic. Neither company is acting responsibly," Coxon wrote. "They are racing straight to self-improving superintelligence and gambling with our lives."
"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," he wrote.
"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. No other human activity poses this level of danger."