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Every online shopper knows the moment. The cart is full, the checkout page loads, and there it is: an empty field labeled "promo code." What follows is usually a detour — a new browser tab, a search through coupon sites, and a series of pasted codes that mostly come back expired or invalid. Sometimes the hunt pays off. More often it ends in frustration, and occasionally in an abandoned cart. It's a small, universal problem, and it has resisted a real solution for two decades. Couponly AI, an Estonian-built shopping assistant, is betting that machine learning is finally the right tool for it. The problem: coupons run on stale data The coupon ecosystem has a structural flaw. Most discount codes are published on aggregator sites whose business model rewards search traffic, not accuracy. Codes expire, but the pages listing them rarely get cleaned up, so shoppers end up doing the verification work themselves — one paste, one error message, one wasted minute at a time. For merchants, the cost shows up as checkout abandonment. The empty coupon field signals to shoppers that a better price exists somewhere; when they leave to look for it, a meaningful share never comes back...