We do not currently earn money from 99% of the brands listed on the website since the focus is still on the quality of the results rather than optimizing the margins. But yes many brands have affiliate networks that you can join and if a user clicks on a brand we partnered with and buys the product, we could earn a commission.
We use a bunch of open source models (image embedding model, object detection model, segmentation model..) that we fine-tuned on millions of fashion-related images.
Essentially, the embedding of the user's image gets compared against the embeddings of all the scraped and indexed products.