Instant Pot Duo 5.7L or Duo Mini 3L: which cooker suits your kitchen?
If you’re choosing between these two Instant Pot DUO models, you’re really deciding between maximum flexibility and compact convenience. Both have the same 7-in-1 core functions and an identical 4.7/5 rating from 19,692 reviews, so the decision comes down to capacity, footprint, and how you actually cook at home. For UK kitchens where worktop space, batch cooking, and family meal sizes matter, this is a very practical choice. Here’s the clear verdict on which one deserves your money.

Instant Pot Duo 7-in-1 Electric Multi-Cooker 5.7L - Brushed Stainless Steel, Large Pressure Cooker, Slow Cooker, Rice Cooker, Sauté, Yoghurt Maker, Food Steamer Pot and Food Warmer, Dishwasher Safe

Instant Pot DUO MINI 3L Electric Pressure Cooker. 7-in-1: Pressure Cooker, Slow Cooker, Rice Cooker, Sauté Pan, Yoghurt Maker, Steamer and Food Warmer, Black,silver
Our Recommendation
Product A wins because it offers far more usable capacity for only £5 extra. The 5.7L pot is much better for family meals, batch cooking, and the kind of hearty one-pot dishes UK cooks actually make. Both models have the same 7-in-1 functions and the same 4.7/5 rating, so the larger size is the deciding factor. Unless you specifically need a compact 3L cooker, Product A is the more practical and better-value purchase.
Detailed Comparison
Display
Neither product listing provides detailed display specifications such as screen size, backlighting, or interface layout, so there is no meaningful difference to call from the data provided. In practical terms, both are Instant Pot Duo models, so you can expect the same style of straightforward control panel and preset-driven operation. Winner: tie, because the available information does not show any display advantage for either model.
Performance
On performance, these are effectively the same family of cooker. Both are 7-in-1 machines with pressure cooking, slow cooking, rice cooking, sauté, yoghurt making, steaming, and food warming, and both carry the same 4.7/5 rating from 19,692 reviews. That strongly suggests similarly reliable results for everyday UK cooking like stews, curries, rice, soups, and batch-cooked chilli. The real performance difference comes from capacity: Product A’s 5.7L pot is better for bigger joints, family meals, and batch cooking, while Product B’s 3L pot is better for small portions and quicker, more efficient cooking of smaller amounts. Winner: Product A, because the larger capacity makes it more versatile for most households and gives you more room to cook without feeling cramped.
Build quality and design
Product A is listed as brushed stainless steel, which gives it a more premium, kitchen-friendly look and usually a better chance of blending in with other appliances on a UK worktop. It also has the more substantial 5.7L format, which suits households that want a main multi-cooker rather than a secondary one. Product B is the Mini 3L in black/silver, and while it will be neater for tight spaces, it is clearly designed for compact use. If you live in a flat, have limited counter depth, or want something easy to tuck away in a cupboard, Product B has the space-saving advantage. Winner: Product A, because the brushed stainless finish and larger, more versatile form factor make it feel like the better-built centrepiece appliance.
Battery life
These are mains-powered electric multi-cookers, not battery devices, so battery life is not applicable. In a UK home, both will run from a standard plug socket and neither has portability in the sense of cordless use. Winner: tie.
Price and value for money
Product B is £69.99, while Product A is £74.99, so the Mini is £5 cheaper. That is a very small saving, especially when you consider that Product A gives you 5.7L capacity versus 3L on Product B. For just a fiver more, Product A offers far better value if you cook for more than one or two people, batch-cook lunches, or like making larger portions of soup, curry, or rice. Product B only wins on value if you genuinely need a smaller machine and will regularly use the reduced capacity. Winner: Product A, because the extra £5 buys a much more useful size jump.
Game library/features
These are kitchen appliances, so there is no game library in the usual sense. Looking at features instead, both have the same 7-in-1 cooking modes, and both are dishwasher safe according to the Product A listing. That means the feature set is essentially matched, with the main difference being capacity rather than function. Product A edges it because the larger 5.7L pot gives you more freedom across those same functions, especially for pressure cooking and steaming larger quantities. Winner: Product A, because the feature set is identical but the bigger capacity makes those features more useful.
Overall user experience
For most UK buyers, Product A is the easier recommendation because it is the more flexible everyday cooker. The 5.7L size is much better suited to family meals, meal prep, and entertaining, while still being manageable on a typical worktop. Product B is the smarter choice only if your household is small, you cook modest portions, or your kitchen is genuinely tight on space. Since both are rated identically and cost almost the same, the larger model simply gives you more appliance for your money. Overall summary: Product A is the better buy for most people, while Product B is the niche pick for compact kitchens and smaller portions.
Buy the Instant Pot Duo if...
Buy Product A if you cook for three or more people, batch-cook lunches, or want one multi-cooker that can handle family-sized stews, curries, rice, and soups. It is also the better choice if you want a more premium-looking brushed stainless steel appliance on your worktop.
Buy the Instant Pot DUO if...
Buy Product B if you live alone or as a couple and usually cook smaller portions, or if your kitchen is short on counter space and storage. It also makes sense if you want the cheapest way into the Instant Pot ecosystem and know the 3L capacity will be enough.
Curated by Kitchen Upgrade on All The Top Picks
As an Amazon Associate we earn from qualifying purchases.