Air Fryer vs OTG: Which One Belongs in Your Kitchen

These two appliances get compared constantly and shopped interchangeably, which leads to a lot of regret. They overlap in the middle and diverge at both ends, and which one suits you depends almost entirely on what you cook and for how many people.

What each one actually is

An air fryer is a compact, heavily insulated convection oven with a powerful fan and a perforated basket. Hot air is forced around food at high velocity, which crisps the surface quickly. There is no frying — the name is marketing — but the result on the surface is closer to fried food than a conventional oven achieves.

An OTG (oven, toaster, griller) is a small conventional oven with heating elements above and below and, usually, a weak or absent fan. It heats a larger cavity more slowly and more gently, with rack positions and a tray.

The mechanism is what determines the use case. Fast violent air crisps small things well. Slow even heat bakes large things well.

What the air fryer is better at

Crisping. Frozen snacks, samosas, nuggets, fries, papad, reheating pizza. Nothing else in a domestic kitchen does this as quickly or as well, and reheating leftover fried food is where an air fryer genuinely outperforms every alternative.

Roasting vegetables and chicken pieces. Small cuts, high heat, browned surfaces.

Speed. Little or no preheating, and cooking times roughly 20–30% shorter than a conventional oven. For a weekday snack, this is the whole argument.

Running cost. A small cavity heated briefly uses far less electricity than a large cavity heated for an hour.

Cleanup. A basket and a drawer, both usually dishwasher safe.

What the OTG is better at

Baking, properly. Cakes, cookies, bread, brownies. The gentler, more even heat and the ability to use full-size tins means results that an air fryer cannot match. A strong fan actively works against a rising cake.

Capacity. An OTG will hold a tray of thirty cookies or a whole chicken. A typical 4-litre air fryer basket holds enough fries for two people, and you will cook family portions in batches.

Toasting and grilling. Wide flat items — bread, open toasties, paneer tikka on skewers — suit a rack better than a basket.

Cost per litre. OTGs are considerably cheaper per litre of capacity. A 30L OTG often costs less than a 5L air fryer.

The honest usage question

Air fryer ownership in India follows a well-documented arc: enthusiastic daily use for four to six weeks, then weekly, then it lives on top of the fridge.

This is not because air fryers are bad. It is because the food they excel at — crisped snacks — is not what most households cook daily, and the basket is too small for family meals.

So the useful question is not “which is better”, it is what do I cook more than twice a week? If the honest answer is snacks, reheated fried food and roasted vegetables for two, buy the air fryer. If it is baking, or feeding four or more, buy the OTG.

If you can only have one

Your situation	Buy
One or two people, snacks and reheating	Air fryer
Family of four or more	OTG
You bake, or want to learn	OTG
You want to eat less deep-fried food	Air fryer
Tight counter space, want convenience	Air fryer
Tight budget, want maximum capacity	OTG

On buying both

For most kitchens this is the wrong answer, because the combined counter space and the combined cost buy you less than one appliance used well plus something else entirely — a better mixer grinder, a good pressure cooker, a decent knife.

Buy both only if you genuinely bake regularly and eat crisped snacks regularly, and you have the counter space to leave both accessible. An appliance in a cupboard is an appliance you do not use.

Sizing notes

Air fryer: 4L serves one or two. 6L serves three or four with batching. Below 3.5L is a single-person appliance. Basket shape matters as much as volume — a wide shallow basket cooks more evenly than a tall narrow one of the same litres.

OTG: 16–20L for toasting and small baking. 30L or more for family baking and whole chickens. Below 16L is limiting for anything but toast. Check whether the model has convection — an OTG with a fan narrows the gap to an air fryer considerably.

The short version

The air fryer is a snack and reheating machine that happens to roast well. The OTG is a baking machine that happens to toast well.

Pick based on which description matches your kitchen, not on which appliance is newer.

Frequently asked questions

Is an air fryer just a small convection oven?

Essentially yes — a small, well-insulated convection oven with an aggressive fan and a basket. The physics are the same. What differs is the speed, the capacity and the shape of the cooking space, and those differences are large enough to matter.

Can an air fryer bake a cake?

A small one, yes, in a tin that fits the basket. The results are acceptable rather than good — the fan is strong enough to disturb a rising batter, and capacity limits you to about a 500g cake. An OTG does this properly.

Which is cheaper to run?

The air fryer, by a clear margin. A smaller cavity and no long preheat mean it uses substantially less electricity for the same job. For anything you can cook in either, the air fryer wins on running cost.