In December 2018, cop 24/cma 1.3 adopted the Modalities, Procedures and Guidelines for the Transparency Framework under Article 13 of the Paris Agreement. Commenting on this decision, this article reviews and assesses the rules on transparency in the unfccc regime as they will apply during the coming years. Two main themes are identified: differentiation and progression. With regard to differentiation, while the Transparency Framework seeks to apply the same rules to all countries, bifurcation remains in place in some important respects. With regard to progression, the article identifies four aspects in which the adoption of a uniform set of rules has come at the expense of the stringency of the rules applicable to Annex i parties.