People often ask this as if one size must be the cleverer or calmer poodle. In truth the Standard and Miniature share a breed standard, a coat and a temperament; what changes is the scale of everything you will feed, groom, exercise, transport and pay a professional to clip.
Size in daily, not show-ring, terms
A Standard Poodle is a genuinely large dog, tall at the shoulder and strong enough that an untrained adult can pull an unprepared handler off balance. It needs a vehicle it can ride in comfortably, a bed and crate sized for a big dog, and room to turn around in hallways and bathrooms. A Miniature is a sturdy small-to-medium dog that fits a lift, a bus ride in a carrier where rules allow, and a flat without rearranging the furniture. That smaller footprint is the Miniature's main advantage, and for renters and city owners it can be the deciding one all by itself.
Temperament: the same sharp mind twice
Both sizes are alert, trainable and famously quick to connect cause and effect, including causes you did not intend to teach. A bored poodle of either size will redecorate, bark at windows or invent games with your belongings. Miniatures sometimes get a reputation for being snappier, but that usually reflects how small dogs get handled: picked up without warning, teased and under-exercised. Treated like a real dog with boundaries, training and work to do, a Miniature is as steady as its larger cousin. Standards, for their part, need their strength respected from puppyhood, because manners installed at lap size are much harder to install later at full size.
Exercise and activity expectations
Do not buy the Miniature as the low-energy option. Both sizes were water retrievers, and both expect daily walks, play and mental challenges such as training games, scent work or dog sports. The Standard needs the larger total amount and a space where it can actually run and stretch out; a Miniature's needs can be met more easily in urban routines, but skipping them produces the same restless behaviour in miniature. For active owners, the Standard is the better hiking, running and swimming partner simply because its stride and stamina match an adult human's.
Grooming, feeding and running costs
That curly, low-shedding coat grows continuously and mats without regular brushing and clipping, at either size. The difference is scale: a Standard takes a groomer far longer, uses more product at home and costs more per appointment, and its food, worming-by-weight vet items, beds and leads all price at large-dog rates. A Miniature's upkeep is meaningfully cheaper and its coat can be maintained at the kitchen table more realistically. Health conversations differ slightly too: ask Standard breeders about bloat precautions and hip screening, and Miniature breeders about knee and eye screening, and expect paperwork for whichever claims are made.
Deciding between the two sizes
Write down your honest constraints: floor space, car size, who will walk the dog in bad weather, grooming budget, and whether small children will be around a large, bouncy adolescent. The poodle personality is a constant; the logistics are the variable, and logistics are what you will live with daily for the dog's whole life. Visit both sizes as adults, not just as puppies, because an eight-week-old Standard gives no warning of the athlete it becomes. Whichever size joins the household, KinsLe Family Sharing lets everyone who feeds, walks or grooms your poodle work from the same coat-care and exercise notes instead of three different memories of the plan.