They claim 890g. Aeroad CFR is claimed 915g. Giant Propel is 845. Supersix Lab71 is 770. SL8 is 685 though that’s their “ready to paint” frame and the painted ones come up a little heavier.
So I guess it’s at the high end of the lightweight aero bikes, but not way off. And maybe just reflects that it’s an aero bike that’s shed weight (like the Aeroad and Propel) as opposed to a lightweight bike that has gained aero (like the SL8 and Supersix). Compares pretty well to the out and out aero bikes like the Madone (~1000g) and Systemsix (~1100g).