Abstract: Example systems for determining a configuration of a test system execute operations that include receiving first parameters specifying at least part of an operation of a test system; receiving second parameters specifying at least part of a first configuration of the test system; determining a second configuration of the test system based, at least in part, on the first parameters and the second parameters, with the second configuration being determined to impact a cost of test of the test system; generating, by one or more processing devices, data for a graphical user interface representing information about the second configuration and the cost of test; and outputting the data for the graphical user interface for rendering on a display device.