As the formal negotiations on the Paris Agreement implementation concluded, the focus moved towards increasing countries’ ambitions in addressing climate change through national- and EU-level policies. This requires monitoring, reporting and verification mechanisms, most notably in the form of the Global Stocktake. It also transforms the role of the United Nations Framework Convention on Climate Change (UNFCCC) into a learning forum facilitating the sharing of policy design knowledge, experiences with implementation and potential for changing policymakers’ beliefs on co-benefits between climate action and economic development. This contribution examines how learning allowed actors to leverage policy positions and re-shape policy paradigms by exploring how the learning process interacts with the policymaking dynamics in the context of the UNFCCC negotiations and the multilevel reinforcing dynamics with the sub-national, national and EU levels between 2015-2023.