The Trends in the land carbon cycle (TRENDY) project contributes to the annual Global Carbon Budget assessment by providing global and regional net biome productivity (NBP) from participating Dynamic Global Vegetation Models (DGVMs) every year since 2010. The Canadian Land Surface Scheme Including biogeochemical Cycles (CLASSIC) or its predecessor, the coupled Canadian Land Surface Scheme and Canadian Terrestrial Ecosystem Model (CLASS-CTEM), have participated in TRENDY since 2016. A suite of globally gridded observation-based datasets as well as in situ measurements enable us to evaluate model simulations on a global scale. Here, we investigate how CLASSIC’s/CLASS-CTEM’s performance with regards to carbon, water and energy fluxes has changed over eight years of TRENDY simulations in order to highlight where simulations have improved or degraded. As the model code as well as forcing files evolve between TRENDY simulations, we will also discuss the impact of forcings on simulated fluxes using the most recent CLASSIC code.