Anthropic CEO Dario Amodei published an essay on Saturday urging artificial intelligence companies to pace how quickly they improve model capabilities, a move that comes as a growing chorus of researchers have called for a coordinated deceleration.

The proposal for a voluntary slowdown brought together three figureheads of the AI industry in agreement, with SpaceX CEO Elon Musk and OpenAI chief Sam Altman throwing their support behind Amodei.