Under what conditions is a group belief resulting from deliberation constitutive of group knowledge? What kinds of competences must a deliberating group manifest when settling a question so that the resulting collective belief can be considered group knowledge? In this paper, we provide an answer to the second question that helps make progress on the first question. In particular, we explain the epistemic normativity of deliberation-based group belief in terms of a truth norm and an evidential norm, introduce a virtue-reliabilist (...) condition on deliberative group knowledge, and provide an account and a taxonomy of the types of group competences that are necessary for this type of collective knowledge. (shrink)