OpenAI and Anthropic researchers escalated public calls to slow AI development and warned of existential risks after Anthropic researcher Jacob Coxon quit and accused the labs of “gambling with our lives.” Additional employees backed the warnings, including OpenAI safety staff Julie Steele and Anthropic researcher Samuel Marks.
WHO:Jacob Coxon; Evan Hubinger; Julie Steele; Samuel Marks; OpenAI and Anthropic researchers
WHAT:Researchers at OpenAI and Anthropic issued public warnings and calls to slow AI development, citing existential risks following Coxon’s resignation.
WHEN:Reported Sep 9, 2026 at 8:00 PM ET
WHERE:Location not specified
WHY:Cause not yet established.
Reporting from 3 identified publishers across this event arc.
