Not necessarily. Their prices are based on the matching between advertisements and websites. Generally speaking, Baidu's unit price will be higher than Ali's mother. Generally, the unit price of Baidu is 0.2-0.5 yuan. Of course, if you are an entertainment website, the unit price may be lower than this price range. Ali's mother is generally between 0.08 and 0.3.
The pictures are advertisements of Baidu and Google. Relatively speaking, I still recommend Google, followed by Baidu, and then Ali Mom.