Why is a completely full glass of wine such a challenge for image-generating AIs? The prevailing wisdom is that AI-powered models do best with images they’ve been trained on—and when it comes ...

For example, the Piccolo bottle -- sometimes called a split -- equals a single glass of wine, a demi pours two glasses, a ...

So there’s no hard-and-fast answer to how many glasses of wine are in a given bottle, but 4.5 ounces per glass splits the difference in standard restaurant pours.

Food & Wine / Getty Images. How big is a glass of wine? For Martinez, who has spent years training restaurant staff on this very topic, the right amount to pour per glass remains subjective.