Sensual and tantra both move slowly, but sensual is defined by mood and touch, and tantra by tempo and breath; the ladder prices them identically.
The two names sit near each other on most Amsterdam menus, and many buyers treat them as interchangeable. They share a slowness and an adult register, which is why the confusion is natural. They differ in what organises the session, and knowing that difference makes the request in the thread more precise.
A sensual session is shaped by atmosphere. Low light, warmth, an unhurried touch and a mood that builds over the course of the booking are its defining features. It carries no particular structure beyond that, and it adapts easily to a shorter length.
A tantra session is shaped by tempo. Its structure is an opening, a middle and a close, each paced against the breath, with long periods of stillness that a sensual session would not necessarily include. The atmosphere matters, but it is the setting rather than the substance.
Three questions usually settle it. How much time is there? Where only an hour is free, sensual tends to fit it more comfortably, while tantra asks for ninety minutes or two hours. What is the evening for? A client wanting warmth and ease after a long day often chooses sensual; one wanting the day to fall away altogether, slowly, often chooses tantra. And is there anywhere to be afterwards? Tantra is less forgiving of a close that has to be cut short.
Neither is the gentler or the deeper of the two in any simple sense, and neither costs more. Both sit on one ladder: EUR 180 buys an hour of either, EUR 270 ninety minutes, EUR 360 two hours.
A client who cannot choose can say so in the thread, with the length and the kind of evening in mind, and the office will suggest one. The comparison guide adds erotic oil to the pair, the sensual massage page describes that technique on its own terms, and the tantra entry covers the other side.