The research paper examines how Parties position themselves on market mechanisms in the latest NDCs. Article 6 of the Paris Agreement establishes two approaches for market-based cooperation in the context of NDC attainment. However, despite numerous rounds of negotiations, Parties have not yet been able to agree on detailed provisions for these new types of market-based cooperation. Five years after the adoption of the Paris Agreement in 2015, Parties were requested to prepare new or updated NDCs and submit them to the UNFCCC Secretariat by 2020. The paper surveys text passages regarding international cooperation under Article 6 in the 51 NDCs that were submitted until 28 February 2021.