The OpenIFS - FESOM2 coupled model is presented and first results of coupled climate simulations with the new model are shown. The model performs well for present day climate and is slightly too sensitive for reduced co2 in per-industrial settings. It shows similar long term sea surface biases as EC-Earth3, based on IFS&OpenIFS radiation biases. FESOM2 may be considered as alternative to NEMO for EC-Earth4, and OpenIFS as an alternative to ECHAM6 and ICON-A at AWI. Future work includes model tuneing, modifying resolutions and coupling of further Earth System Model components such as the dynamic land vegetation model LPJ-Guess. The model will be used within the ESM Project.