Pope Leo XIV called Monday for the "disarming" of artificial intelligence in his long-awaited manifesto on the rapidly developing technology, and warned of "new forms of slavery" behind its rise.Leo, the first US pope, warned against "a race for ever more powerful algorithms and larger datasets, driven by the desire to secure geopolitical or commercial dominance".

He presented his first encyclical, "Magnifica Humanitas" (Magnificent Humanity) in person at the Vatican, alongside AI experts including Christopher Olah, co-founder of US giant Anthropic.

Anthropic is embroiled in a legal battle with the US military after opposing the use of its technology for lethal autonomous warfare and mass surveillance.

At the presentation, Olah said AI companies operate "inside a set of incentives and constraints that can sometimes conflict with doing the right thing".

He welcomed input from outside actors like the Catholic Church, to "push events in a better direction", saying that "the questions raised by AI are bigger than the AI research community".