If you aren't that "artificial" intelligence and can't put yourself in that subjective experience, how would you know that the AI's subjective experience differ

If you aren't that "artificial" intelligence and can't put yourself in that subjective experience, how would you know that the AI's subjective experience differs from yours? Because you're relying on material observance? You realize your conundrum now? You have to rely on the material to gauge the material yet you try to invalidate the material experience using material observations.