Anthropic Researcher Resigns as Silicon Valley’s AI Safety Debate Intensifies

A resignation by Anthropic researcher Jacob Coxon has pushed long-running warnings about artificial intelligence and human extinction into the center of Silicon Valley’s public debate. Coxon said he left after working on pretraining research at OpenAI and Anthropic, arguing that frontier labs are advancing toward self-improving systems faster than safety measures can keep pace. Bloomberg reported that the episode has brought a once-peripheral concern into the mainstream.