Look first at capacity – a 6‑quart unit like the Instant Pot Duo Crisp fits a family of four to six, while larger 10‑quart models handle bigger meals. Next, compare cooking functions; 11‑in‑1 models give more versatility than 7‑in‑1 versions. Finally, consider temperature range and technology such as EvenCrisp or TurboBlaze, which affect crispness and cooking speed.

Both share EvenCrisp technology and a 6‑quart capacity, but the Ultimate Lid adds sous‑vide, yogurt making, and proofing functions, expanding its utility beyond the standard 11 functions. The Ultimate Lid also features a larger, clearer display and a dedicated steam‑release button for easier pressure‑cooking. If you need specialty functions like sous‑vide, the 13‑in‑1 is worth the extra cost.

The Ninja Combi offers 14 cooking modes, including a unique Combi Crisp that simultaneously steams and air‑fries, which can reduce cooking time by up to 50 % for complete meals. Its 4‑qt pan doubles as a serving dish, simplifying cleanup, while the Instant Pot focuses more on pressure‑cooking and air‑frying separately. If you value an all‑in‑one that can replace a separate oven, the Ninja Combi may provide better overall value.

A wider temperature range gives you more control over texture; the Duo Crisp with a 70 °F‑450 °F range lets you dehydrate at low heat and achieve a deep crisp at high heat. Models without a low‑temperature setting may struggle with delicate tasks like drying herbs. Choose a unit with at least 70 °F‑450 °F if you plan to use both air frying and low‑heat functions regularly.

Larger units, such as the 10‑quart Instant Pot Air Fryer, can handle up to six servings and reduce the need for multiple batches, saving time during family meals. However, if you typically cook for two or three people, a 6‑quart model provides the same features at a lower price. Evaluate your typical portion size and frequency of batch cooking to determine if the extra capacity is worth the investment.

Both appliances use dishwasher‑safe accessories; the Ninja Combi’s pan doubles as a serving dish, cutting down on extra cookware. The AEWHALE includes interchangeable plates (steamer, griddle, air‑fryer) that are all non‑stick and easy to rinse, and its 4.5‑quart pan is oven‑safe for versatile use. These design choices simplify post‑meal cleanup compared to models with many hard‑to‑reach parts.

EvenCrisp, used in Instant Pot models, circulates hot air with a precise 95 % oil reduction, delivering consistent crunch across a range of foods. TurboBlaze (Cosori) pushes fan speed to 3600 rpm for faster cooking, while Air Crisp (Ninja) focuses on superheated 400 °F air for rapid crisping. All three achieve similar results, but TurboBlaze may be slightly quicker, whereas EvenCrisp offers more programmable functions.

The Duo Crisp combines pressure cooking and air frying, saving counter space and eliminating the need for a second appliance. However, dedicated air fryers often have larger baskets and faster pre‑heat times, which can be advantageous for high‑volume cooking. If you frequently prepare large batches of fries or wings, a standalone air fryer might still be beneficial.