CNBC's Kate Rooney reports a growing divide over whether to slow AI development. Anthropic CEO Dario Amodei's essay calling for a slowdown has drawn support from Sam Altman, Elon Musk, and Google's Demis Hassabis. NVIDIA CEO Jensen Huang and President Trump push back on the most extreme slowdown rhetoric, arguing it could cede U.S. leadership to China and that doomsday talk is a hoax. The debate is unfolding at Salesforce Dreamforce and other events.