The Instant Pot is now offered in nine different models. It applies to the Duo, Duo Plus, Ultra, Lux, Smart, Duo Nova, Viva, Duo Evo Plus, and Max models of the Pot. Each model comes with a wide range of features and abilities. The Duo, the first version, is ideal for pressure cooking and making one-pot meals. The Duo Plus is an improved model of the Duo that has a sterilizing feature in addition to more menu choices.