Matthew Harvey Sanders expressed his excitement about the launch of ChatGPT, describing it as a solution he had been seeking for a long time. Standing in the contemporary library of the Vatican’s Pontifical Oriental Institute, the serious 43-year-old Torontonian in formal attire is surrounded by shelves filled with an extensive collection of books on Eastern Catholic traditions.
Sanders, the CEO of Magisterium AI, is dedicated to transforming the vast written archives of the Catholic Church into a specialized artificial intelligence platform. In a nearby office close to Rome’s Termini station, a team of young women uses large scanners to digitize thick theological volumes. Sanders mentioned their current task of compiling the complete works of the doctors and fathers of the church.
His journey to developing the world’s most widely used Catholic AI chatbot began with his Anglican baptism, Evangelical upbringing, and subsequent conversion to Catholicism after a course on Catholic Church history at the University of Toronto. Sanders identified a gap between the church’s intellectual heritage and the tools accessible to explore it, leading him to establish Magisterium with support from private Catholic donors.
Unlike general-purpose AI systems trained on broad internet data, Magisterium is meticulously trained on primary Catholic sources, including materials often stored in specialized libraries or church archives. Sanders emphasizes the platform’s reliance on direct citations from these sources to ensure accuracy and authenticity.
Although the Vatican has not formally endorsed the platform due to its continuously evolving nature, Sanders proudly displays a supportive letter from Pope Leo XIV in his office, emphasizing the significance of technological innovation in the realm of Catholicism.
Under Leo’s papacy, artificial intelligence has become a focal point, with the pontiff highlighting its potential to reshape societal norms and human identity. Magisterium, active in 185 countries after a few years online, is predominantly utilized by clergy, educators, and lay Catholics worldwide, addressing a range of moral and ethical queries.
Sanders stresses the importance of Magisterium as a reference tool rather than a substitute for traditional religious practices, advocating for a balance between utility and human connection. The platform’s advisory board member, Michael Baggot, underscores the value of AI as a facilitator for exploring challenging topics but cautions against replacing human interaction with automated responses.
Despite its benefits in reducing factual errors, AI ethicist Virginia Dignum warns that faith-specific systems like Magisterium have limitations in guaranteeing absolute truth. Sanders aims to bridge the knowledge gap within the Catholic Church by digitizing historical records and promoting greater access to intellectual resources, fostering a culture of engagement and accountability among clergy and laity alike.
Sanders’s personal narrative of navigating multicultural Toronto and his intellectual journey into Catholicism underscore his commitment to leveraging technology for the greater good within the Church, aiming to enhance transparency and understanding among its members.

