Jessica Cooper
Bio
Updated 03/22/26Jessica Cooper (also known professionally as Jessica Rumbelow) is the founder and CEO of Leap Laboratories, an AI interpretability startup based in London. She holds a PhD in model-agnostic AI interpretability, an MSc in Advanced Computer Science, and a BA in Fine Art, all from the University of St Andrews, where she also worked as a Research Scientist applying deep learning to digital pathology. She participated in the MATS (ML Alignment & Theory Scholars) Autumn 2022 cohort, during which she co-authored the widely-cited "SolidGoldMagikarp" paper with Matthew Watkins, discovering anomalous tokens that cause failure modes in GPT-2 and GPT-3 models. She subsequently worked at Aligned AI and the Stanford Existential Risks Initiative before founding Leap Laboratories in 2023, which received seed funding from the AI Risk Mitigation Fund to develop a model-agnostic interpretability engine. She serves on the Advisory Board of the London Initiative for Safe AI (LISA) and is an Affiliated Lecturer at the University of Cambridge, where she co-taught a course on Explainable AI. In March 2022, she received LTFF funding to trial a new London organisation aimed at significantly increasing the number of AI safety researchers.
Community Signal
Updated 03/22/26No endorsements yet.
Links
Updated 03/22/26- Personal Website
- https://jmcooper.net/
- Twitter / X
- LessWrong
- jessica-cooper
- EA Forum
- -