Jacob Coxon resigned from Anthropic in September 2026, forfeiting unvested equity to publicly warn that both Anthropic and OpenAI are racing toward superintelligence without adequate safety plans, with internal researchers estimating over 10% risk of AI-caused human extinction within the decade. His departure echoes Frances Haugen's 2021 Facebook whistleblowing and reflects a broader tech industry culture prioritizing speed and profit over quality and responsibility.