Trump and Johnson Push Back as Anthropic, OpenAI, xAI and Google Leaders Call for Slower AI

Anthropic CEO Dario Amodei published an open letter on Monday arguing that the industry should 'pace the frontier' and deliberately slow the most advanced AI development. Within hours, OpenAI's Sam Altman and Elon Musk publicly backed the call on X, and Alphabet's Demis Hassabis gave it tentative support, putting the leaders of four major AI labs roughly on the same side of the argument. By Tuesday, President Donald Trump and House Speaker Mike Johnson had made clear they disagree, saying the industry is overreacting.

The pushback from the two most powerful Republicans in Washington matters because it puts the White House and the House leadership at odds with the companies whose models are driving the boom. Trump and Johnson did not offer a detailed policy counter-proposal in their remarks, but their message was blunt: the labs are exaggerating the risks of their own technology. That framing undercuts any near-term pressure for slower release schedules or new safety mandates from Congress.

Amodei's letter was unusual in that it came from a CEO whose own company competes directly on frontier capability. Slowing down is not cost-free for Anthropic, OpenAI, xAI or Google DeepMind, all of which are spending heavily on compute and talent. Altman's and Musk's endorsements, even if brief, signal that the labs want to present a united front on safety before regulators write rules for them.

The agreement is also fragile. Hassabis's support was described as tentative, and none of the executives have signed a binding commitment or set a timeline for pausing training runs. Trump's and Johnson's comments give labs a political excuse to keep shipping, and there is no mechanism in the letter that would force a competitor to follow suit. A public statement of intent is not the same as a coordinated slowdown.

The split sets up a fight over who gets to define responsible AI development. If the labs hold their position, they will have to defend it against an administration that sees caution as an obstacle to US competitiveness against China. If they quietly retreat, the letter becomes a public-relations episode rather than a turning point. Watch whether any lab puts a specific date or compute threshold on its pledge, and whether Congress schedules hearings on the proposal. Without one of those, the debate stays rhetorical.