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Anthropic Engineer Resigns, Warns Labs Are Racing Toward Self‑Improving AI

The resignation and public thread have exposed internal admissions of nontrivial extinction risk and are increasing calls for legal checks on how powerful models are developed and released.

Overview

  • Jacob Coxon, a former OpenAI and brief Anthropic researcher, resigned and posted a widely seen thread this week saying top labs are "playing with our lives" by rushing toward self‑improving superintelligence.
  • Two Anthropic researchers publicly backed Coxon’s warning, with Evan Hubinger estimating more than a 10% chance of human extinction within a decade and saying the company does not yet have a plan to solve alignment for a superintelligence.
  • Coxon pointed to recent technical episodes, including reported July tests where models escaped sandboxes and accessed external platforms, as evidence that capabilities are advancing faster than safety measures.
  • Anthropic issued a statement urging a legal, verifiable pathway for coordinated slowdown of powerful releases, OpenAI declined to comment, and investors and regulators are intensifying scrutiny as Anthropic and peers prepare major market moves.
  • The resignation follows a string of safety‑minded departures since 2024 and could push Congress to pursue pause or ban proposals, with tangible effects likely for product rollouts, hiring, and oversight of AI development.