Biodiversity digital twin for advanced simulation, modeling, and prediction capabilities (BioDT) is a 3-year Horizon Europe project (2022-2025) that will build a digital model of biodiversity systems. GBIF is represented in the project by the GBIF Secretariat and GBIF Norway with responsibility for the data content flow into the digital twin model, and for the design of 8 scientific use cases to demonstrate the fitness for peer-review scientific use of the BioDT.