A hybrid powertrain apparatus for a vehicle, includes first and second input shafts concentrically provided to selectively receive power of an engine, a planetary gear set including a first rotation element, a second rotation element, and a third rotation element, wherein the first rotation element is connected to the first input shaft and the second rotation element is connected to a first motor, a clutch device configured to fix the remaining rotation element of the planetary gear set or connect the remaining rotation element to the second input shaft, a second motor connected to the second input shaft, and an output gear provided on the second input shaft.