Dario Amodei, the leader of Anthropic, has joined calls for a slowdown in AI development. A former Anthropic researcher told the BBC that AI staff feel real fear about what lies ahead. OpenAI's boss and Elon Musk join in backing putting brakes on what they call reckless AI development. US President Trump takes a different line. He says whoever wins AI wins, and dismisses threats as things that won't happen.

The warnings are issued by experts and company chiefs. They urge greater caution before pushing ahead. Trump's view contrasts sharply with those concerns. He argues the race for AI superiority matters more than any downsides.