Instant Pot makes a sous-vide circulator, and confusingly, it doesn’t require an Instant Pot. Sure, it’ll clip onto your Instant Pot inner pot, but it’ll also work with a regular stock pot, just like any other sous-vide circulator.
Source: Gizmodo – Instant Pot’s Sous-Vide Circulator Doesn’t Require an Instant Pot, and It’s Only