Pope Leo Says AI Must Never Decide Over Human Life

Pope Leo XIV has said that decisions affecting human life, freedom and the use of force must always stay under human oversight, and urged governments to move towards a ban on lethal autonomous weapons. He was speaking on 30 October in the Vatican Apostolic Palace to people taking part in a meeting organised by the Pontifical Academy for Life and the Future of Life Institute, according to the official text published by the Holy See Press Office.

“Certain decisions must never be delegated,” Pope Leo said, the point Vatican News chose for its headline.

In brief

Pope Leo set out five points drawn from his document Magnifica Humanitas.
He rejected calls to give AI systems rights or legal personhood.
He asked states meeting in Geneva in November to take “concrete steps toward banning lethal autonomous weapons”.

Pope Leo’s five points on AI

The Pope told the group that its members “share a certain sense of unease regarding the development of artificial intelligence”, adding: “We recognize the direction we should take, yet not enough is being done to move forward.” He recalled that Pope Francis told the G7 in June 2024 that AI was “at the same time an exciting and fearsome tool”.

Drawing on Magnifica Humanitas, he made five points:

Purpose before power. People have “the responsibility to guide, change and, when necessary, reject” AI applications. The question is “not simply ‘What can AI do?’ but rather, ‘What purpose should it serve?'” He warned that treating AI “merely as a race to be won” risks “forgetting those who are left behind”, and said “a reliable system that serves the human person is of greater value than one that is exceptionally powerful but whose consequences cannot be adequately foreseen or controlled”.
Tools, not persons. “Machines are tools, not persons,” he said, citing the document’s point that AI systems have no body, no experiences and no feeling of joy or pain. On proposals to grant these systems rights or legal personhood, he said: “Such an approach risks obscuring human responsibility and leaving those who suffer harm to confront a faceless entity.”
Decisions that stay human. “When a person is placed on a target list or entered into a border control database, there is a danger that he or she will be reduced to a mere data point,” he said. Such decisions “must always remain subject to effective, informed and responsible human oversight”, and AI “must be ‘disarmed'”.
Shared benefits. “Intelligent technologies must be directed toward the common good,” he said, quoting the document’s line that “justice requires access to the benefits of innovation, including care, knowledge, tools and opportunities”. Such technologies “must never become ends in themselves or serve merely the interests of a privileged few”.
Institutions that can act. “What we currently need are institutions capable of putting these principles into practice,” he said, calling for “shared standards, independent oversight and clear mechanisms of accountability” so that AI decisions can be examined, challenged and remedied.

A meeting between the Vatican and AI safety researchers

A separate Vatican News report says the meeting took place at the Casina Pio IV and was a dialogue between the Future of Life Institute, which it describes as “an independent organization that studies the risks of advanced technologies”, and the Vatican’s Interdicasterial Commission on AI, chaired by Cardinal Michael Czerny. “We are very keen to pass from words and ideas to possible policies and actions,” the cardinal said.

Speakers included the institute’s chair Max Tegmark of MIT, the computer scientist Stuart Russell, who urged the field to “turn aside from this trajectory before it is too late”, and Father Paolo Benanti, who called for “rules that bind, institutions able to verify, and a person who answers for every decision a machine helps to make”.

The Geneva meeting the Pope mentioned is the Seventh Review Conference of the Convention on Certain Conventional Weapons. UN News reported in August that the UN Secretary-General and the head of the International Committee of the Red Cross called it the “clearest path available” towards negotiations on a binding treaty. The convention’s expert group says it runs from 16 to 20 November 2026.

Why the Pope is asking for institutions, not more principles

The most useful part of the address is its admission that principles are no longer the gap. “We already know many of the ethical principles,” the Pope said. What he asked for instead were bodies with the power to check AI decisions, hear challenges and order remedies. That moves the Vatican’s position from moral guidance towards the kind of oversight regulators and courts provide.

It also lines up with where the AI industry has been heading on its own terms. TSN has reported how safety became a selling point for AI firms, how OpenAI rebuilt its model rules around five core values, and how MLCommons ranked 27 AI systems on safety. Those are rules firms write and test for themselves. Pope Leo’s call is for independent checks that sit outside the companies.

His line on legal personhood is the clearest practical point for developers and lawmakers. Giving an AI system rights would, in his view, leave people harmed by it with no one to hold to account. Keeping the responsibility with the people and organisations that build and deploy these systems is a simpler test, and one that governments can write into law.

On weapons, the timing matters. Militaries are already reorganising around autonomy, as TSN found when the Pentagon folded its autonomous warfare group into a new task force. The Geneva conference will show whether states agree to begin negotiating limits. Pope Leo has now added his voice to the UN and the Red Cross in asking them to. TSN’s AI regulation hub will follow what they decide.