Marius Hobbhahn is a London-based AI researcher and entrepreneur with eight years of experience at the intersection of probabilistic machine learning and AI safety. As co-founder and CEO of Apollo Research he builds technical evaluations and safety tooling aimed at grounding high-stakes model assessments. He completed a PhD under Philipp Hennig at the University of Tübingen, bringing rigorous probabilistic ML methods to forecasting and safety analyses developed during roles at Epoch and as an independent researcher. Marius has a track record of translating deep technical research into organizational efforts—publishing and coordinating work on the Alignment Forum while also launching a new safety-first research lab. Colleagues know him for combining formal ML expertise with quantitative forecasting instincts and a bias toward building evaluative infrastructure rather than solely theoretical results.
8 years of coding experience
PhD Machine Learning, PhD Machine Learning at University of Tübingen
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Marius Hobbhahn - Director And Co-founder at Apollo Research