Magisterium AI is an artificial intelligence platform created by Longbeard, a U.S.-based software company led by CEO Matthew Sanders. This platform provides reliable answers aligned with Catholic doctrine, teachings, and Canon law, serving as a digital companion for those exploring the Catholic faith. It is designed for a diverse audience, including clergy, educators, researchers, and laypeople, and is available in multiple languages across over 125 countries.

The platform features a range of tools tailored to the needs of its users. It offers a faith-aligned Q&A service that provides answers based on official Church documents, a reasoning mode for deeper insights into complex topics, and a document upload feature for personalized commentary on user-submitted texts. Additionally, Magisterium AI integrates real-time web search capabilities and includes a scribe mode for drafting prayers and reflections. It also curates Catholic news and insights, ensuring users stay informed about developments in the Church while maintaining doctrinal fidelity.