Pressure Cooker vs Multicooker

One is a function, the other is a bundle

The confusion comes from mixing up two different kinds of word. A pressure cooker is defined by what it does: it seals and cooks food under pressure, which raises the boiling point and cooks fast. A multicooker is defined by how many things it does: it bundles several cooking methods — typically pressure, slow cook, sauté, rice, steam, sometimes sous vide — into one appliance. So they are not really rivals on the same axis. One names a capability; the other names a category. That single distinction clears up almost all the confusion.

Why most Instant Pots are both

Here is why the terms blur: an Instant Pot is a multicooker that includes pressure cooking. The Duo pressure-cooks andslow-cooks, sautés, steams and cooks rice — so it is accurately called both a pressure cooker and a multicooker, and people use whichever word fits the moment. When someone says “I got an Instant Pot,” they mean a multicooker whose headline feature is pressure. That overlap is real and fine; the problem is only that it leads shoppers to assume every multicooker pressure-cooks. It does not.

The trap: multicookers that do not pressure-cook

Some multicookers deliberately leave pressure out. The Ninja PossibleCooker PRO is an 8.5-quart multicooker that sears, slow-cooks, steams and does sous vide — but it does not pressure-cook at all. If you buy it expecting a fast weeknight roast, you will be disappointed, because the one function that makes a pressure cooker fast is exactly the one it omits. This is the single most common mismatch we see: someone wants the speed of a pressure cooker and buys a multicookerthat happens not to have it. Always check the function list for “pressure” specifically — a long list of modes does not guarantee it.

And the other direction: pressure cookers that are not multicookers

It runs the other way too. A stovetop pressure cooker — the classic jiggle-top pot on a burner — is a pressure cooker that is nota multicooker: it does one thing, cooks under pressure, and nothing else. It has no slow-cook, sauté or rice program because it is not an electric appliance at all. So “pressure cooker” on its own does not imply the bundle of functions people now expect from an Instant Pot; it just means the pot cooks under pressure. If you specifically want only fast pressure cooking and nothing else, a stovetop model is the purest form of it.

A slow cooker is neither

To complete the picture: a slow cooker like the Crock-Pot is neither a pressure cooker nor a multicooker. It does one thing — cook low and slow for hours — with no pressure and no bundle of other functions. It is the honest opposite of a pressure cooker (slow on purpose), and it is why an Instant Pot, which includes a slow-cook mode and pressure and more, can replace a slow cooker but not the other way around. Knowing where the slow cooker sits helps the whole map make sense.

Which one you actually need