Pope Leo XIV to present AI encyclical 'Magnifica Humanitas' on May 25: why it matters for teams

Pope Leo XIV will personally present a papal encyclical on artificial intelligence, titled "Magnifica Humanitas," on May 25; the Vatican signed the text on May 15, 2026. The document addresses ethical and social dimensions of AI and its publication signals a major moral intervention by the Holy See into debates over the technology. The pope's decision to deliver the encyclical himself departs from recent Vatican practice, where cardinals or press officials typically handle presentations. The choice indicates an unusually high-profile rollout and suggests the document is intended to reach broad audiences both inside and outside the Catholic Church.

Anthropic co‑founder Christopher Olah has been invited as a guest speaker for the presentation alongside Cardinal Secretary of State Pietro Parolin and Cardinal Victor Manuel Fernández. Olah leads Anthropic’s work on interpretability — efforts to understand how large AI models operate internally — which aligns his presence with themes of technical safety, explainability and transparency rather than purely doctrinal discussion.

Reporting cited by indicates the encyclical is expected to condemn the use of AI in warfare and to address the technology’s effects on workers’ rights. Pope Leo XIV has previously criticized AI‑powered warfare in public remarks referencing ongoing conflicts in Ukraine, Gaza, Lebanon and Iran; the May 15 signing coincides with the 135th anniversary of Leo XIII’s 1891 encyclical Rerum novarum, a pivotal text on labor and industrial change.

Encyclicals rank among the highest forms of papal teaching and are addressed to the Catholic Church’s roughly 1.4 billion members, so "Magnifica Humanitas" carries substantial moral authority. Pope Leo XIV, the first American pope, has made AI a central theme of his papacy, and taking the name Leo in homage to Leo XIII frames the current technological shift as comparable to the societal rupture of the Industrial Revolution. For builders, researchers and policymakers, the Vatican's invitation to a leading interpretability researcher signals an interest in engaging technical actors on safety, explainability and trust. presentation.