I don't know, but am inclined to think "no," if sentience involves anything like a sense of self-consciousness, interiority, care for the world, or existential motivation. But this is a question that is alive in our culture, an ersatz theology for the secular age. This "dialogue" between a Google Engineer and an AI is quite remarkable, the stuff of science fiction: The dialogue recalls Kierkegaard's quip about St. Anselm, when he heard that the great rationalist had prayed for days asking God to send him "proof" of his existence. "Does the loving bride in the embrace of her beloved ask for proof that he is alive and real?" Who needs ontological arguments for divine existence when you have something more immediate, a relationship?