<human>:  What is the difference between stevia and artificial sweeteners?
<bot>: The main difference between stevia and artificial sweeteners is that stevia is a natural, plant-based sweetener while artificial sweeteners are chemical compounds created in a lab. Stevia is derived from the Stevia rebaudiana plant and has fewer calories than sugar. Artificial sweeteners are generally much sweeter than sugar, so a smaller amount is needed to achieve the same sweetness, and they usually have fewer calories and carbohydrates than sugar.