Yes, but it depends on which Sugar Alcohol you are talking about

Erythritol has Zero Net Carbs in any quantity Maltitol, which is also higher GI, has Net Carbs equal to 1/2 of it's carb content in grams

There are dozens of Sugar Alcohols (also listed sometimes as Polyols) and they are not all equal in either carbs in similar quantities or GI number

The article notes the dif