A hands-on report by 霞光AI实验室 compared Taobao’s embedded shopping assistant, JD AI购, Doubao, and 什么值得买’s “张大妈” on personalized lists, budgeting, price comparison, discount calculation, and multi-turn refinements. Taobao maintained context more consistently, JD AI购 provided fuller pricing and historical-price information, Doubao offered distinctive spending advice but sometimes lost context, and “张大妈” offered cross-platform comparison but struggled to combine products and adjust budgets. The four findings come from the author’s own trials rather than a controlled benchmark.