Anthropic Researcher Quits Over Safety Testing of Advanced AI

Jacob Coxon has resigned from Anthropic, warning that leading AI companies are 'gambling with our lives.' Coxon previously worked at OpenAI. His departure, reported September 13, 2026, came weeks after OpenAI released Astra. It has increased scrutiny of frontier labs — the few companies building the most advanced models — and how they test and release them.