<p>Modernity's ideals of progress through industrialisation, coupled with rationalist views of value-free and neutral science guiding policymaking, have been driving forces behind the climate crisis and related injustices. Post-colonial scholarship calls for unlearning this modernist paradigm. This study examines the extent to which the Intergovernmental Panel on Climate Change (IPCC), the preeminent global authority on climate change knowledge, is both shaped by the procedural logic of Eurocentric modernity and the tendencies towards unlearning these modernist characteristics in favour of more pluralistic, co-productive approaches. Through an inductive-deductive qualitative methodology, including semi-structured interviews with IPCC authors and policymakers at international climate conferences, this paper finds the IPCC to be situated in a tension field between modernity and unlearning it. On the one hand, the IPCC is constrained by path-dependencies of Eurocentric modernity, manifested in the linear model of knowledge transfer, the differentiated systems logic of science and policy spheres, and the privileging of Western scientific expertise as universally valid and apolitical. On the other hand, the study also identifies emergent tendencies within the IPCC towards broadening disciplinary diversity, incorporating alternative epistemologies like Indigenous and Local Knowledge, and fostering co-productive collaborations between scientists and policymakers. These nascent "unlearning" efforts signal cracks in modernity's edifice, though limitations and potential risks caution against overstatement. By highlighting this critical juncture, the paper contributes empirical and conceptual insights into the IPCC's transition from modernist constraints towards more pluriversal climate responses. This analysis sheds light on the IPCC's evolving role in shaping global climate governance and the ongoing struggle to redefine climate knowledge production.</p>