An IC die package includes first and second IC die on a first surface of a glass layer, a bridge under the first and second IC die within an opening in the glass layer, and first and second package conductive features on a second surface of the glass layer opposite the first side. First interconnects comprising solder couple the bridge with the first and second IC die. Second interconnects excluding solder couple the first and second IC die with vias extending through the glass layer to the first package conductive features. Third interconnects excluding solder couple the bridge with the second package conductive features. The bridge couples the first and second IC die with each other, and the first and second IC die with the second package conductive features. A pitch of conductive features in the first interconnects is less than a pitch of conductive features in the second interconnects.