Since 2015, USGCRP’s IGIM has convened an annual U.S. Climate Modeling Summit. The Summit brings together representatives from the U.S. CMIP-class climate model development centers and from operational climate prediction programs, with the goal of improving the coordination and communication of national climate modeling goals. Alongside many of the summits, a technical workshop focused on a high-priority modeling topic facing the U.S. and international modeling communities has also been convened. In 2021, the workshop focused on Earth system predictability. Outcomes included identification of several studies that modeling centers could undertake collectively, focused on accelerating the exploration and effective use of inherent Earth system predictability through advanced modeling. The 7^th U.S. Climate Modeling Summit Report provides a summary.