Anthropic researcher resigns after warning AI could become an existential threat

Coxon, a researcher at artificial intelligence company Anthropic, has resigned after raising concerns about the potential danger posed by advanced AI. In an explanation posted on X, Coxon said people developing the technology seriously believe it could kill humanity before the end of the decade. The warning was reported by CoinDesk on September 9, 2026. Coxon’s comments frame the resignation as a response to concerns about AI safety and the consequences of continued development. The statement does not provide further details about Coxon’s role at Anthropic, the circumstances of the departure or any specific system involved. It also contains no information on financial-market movements or the impact on any cryptocurrency or other digital asset. The remarks add to public debate about the risks associated with increasingly capable AI systems, but the supplied report provides no forecast, company response or market reaction.