An Anthropic researcher who previously worked at OpenAI just quit. He’s the latest insider who’s 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...
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