Anthropic and OpenAI Back Slower Frontier AI Development as Markets and Washington Push Back

Anthropic CEO Dario Amodei has called for slowing the pace of frontier AI development, and OpenAI CEO Sam Altman has backed one of the proposal's central safeguards, setting up a new clash between AI safety advocates, investors and the Trump administration. The debate intensified after Amodei argued in an essay titled "We Must Pace the Frontier" that leading labs should deliberately slow capability gains while independent evaluators and governments catch up.