Some chatbots plan a query and summarize what a search returns instead of trying to produce an answer on their own; I use perplexity a lot which always performs

Some chatbots plan a query and summarize what a search returns instead of trying to produce an answer on their own; I use perplexity a lot which always performs a search, I think ChatGPT et al have some kind of classifier to decide if web search is necessary. I especially use it when I want a suggestion without sifting through pages of top ten affiliate listicles (why is there a list of top 10 microwaves? I only need one microwave!)