Which university should I study at if I want to best prepare for working on AI alignment?

https://80000hours.org/career-reviews/machine-learning-phd/#which-research-group-and-institution

Any reasonable CS undergrad is probably fine, but consider the possibility of going faster than that if you are particularly gifted (e.g. winning math olympiads), rather than spending years in undergrad because we might not have that long

Empirically, Oxford or Berkeley

aisafety.degree will be the place to collaborate on researching where to go for PhDs, not yet launched