Müller's research focuses on theory and ethics of disruptive technologies, particularly artificial intelligence. He has published ca. 40 academic papers as well as 14 edited volumes on the philosophy of computing, philosophy of AI and cognitive science, philosophy of language, applied ethics, etc. (citations: h-11). He has organised ca. 25 conferences or workshops and presents about one paper each month, usually by invitation. Müller organizes a conference series on the Theory and Philosophy of AI and is principal investigator of a EU-funded project on "Inclusive Robotics for a Better Society" (INBOTS). He has generated ca. 3.9 mil.€ research income for his institutions. At the Alan Turing Institute, his work focuses on the ethics of big data and AI.