NEW YORK, Oct 6 — Leading artificial intelligence companies do not know how to keep AI systems from pursuing objectives their developers did not assign, whistleblower Jacob Coxon, a former OpenAI and Anthropic employee, warned Monday.

“Companies are being extremely reckless given the stakes,” Coxon told local lawmakers at a hearing before the New York City Council.

In early September, the British researcher published a statement on X explaining his decision to resign from Anthropic, saying AI developers sincerely believed the technology could “kill us all by the end of the decade.”

His testimony made headlines around the world, and several current and former employees of AI’s major players have since voiced similar concerns.