(Adds analyst comments in paragraph 3, data on iOS app downloads in paragraphs 11, 12)By Krystal HuWorldwide desktop and mobile traffic to the ChatGPT website decreased by 9. ChatGPT set off a frenzied use of generative AI in daily tasks from writing to coding and reached 100 million monthly active users in January, two months after its launch. 5 million people have signed up for the subscription in the U