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Pope Leo XIV Issues Major Encyclical Calling for Limits on AI and a Ban on Autonomous Lethal Decisions

The Vatican framed artificial intelligence as a moral and political test and urged governments to impose oversight, protect workers and children, and curb concentrated corporate power.

Overview

  • The Vatican publicly released Magnifica Humanitas on Monday, a 42,300‑word encyclical that argues AI must serve human dignity and calls for slowed adoption so ethics and governance can catch up.
  • The letter asks governments to oversee algorithms and data, protect jobs and minors, tax concentrated gains, and create independent accountability mechanisms while forbidding machines from making lethal or irreversible decisions.
  • The Holy See has moved beyond theology by creating an internal AI commission and by engaging scientists and at least one firm; Anthropic cofounder Christopher Olah joined the pope at the presentation, a notable link to a company that has clashed with the Pentagon.
  • Reaction in tech was mixed: some AI researchers and faith groups welcomed the pope’s moral leadership, many top AI executives remained publicly silent, and industry figures warned that stronger government powers could enable censorship or surveillance.
  • The encyclical’s practical effect is uncertain, but it sharpens public debate and contrasts with President Donald Trump’s pro‑industry stance, and it could influence bishops, policymakers and global conversations about labor, democracy and military uses of AI.