Labelled photographs of a garment become a model wearing that exact garment. No model photograph needed.
Most tools take one flat photograph of a garment and ask a model to imagine the rest. On a saree that means the pallu, the pleats and the border get invented, and what comes back is a garment that resembles yours without being it. Tantu takes each part as its own labelled shot and tells the engine what each one is, so there is nothing left to guess at.
What it will not do
It is still a generative model. It will occasionally drift, which is why every render can be wiped against the original fabric before you use it.
You give it
You get back