Here is a comparative table between Google Home and Harman Kardon Invoke. Harman Kardon Invoke has a louder speaker than Google Home. The volume of the second product (Harman Kardon Invoke) is greater than that of the first. The second product appears to be heavier than the first. The first product (Google Home) is more expensive than the second. On Google Home runs Google Assistant and on Harman Kardon Invoke runs Cortana. Let's go into detail with the technical data between Google Home and Harman Kardon Invoke. Published data is always indicative and may contain errors or be subject to change. Always check official sources.