Perplexity is a search engine in a chatbot costume. ChatGPT is a chatbot that learned to search. This AI tool vs AI tool comparison really is one question: do you want answers with receipts, or a thinking partner?
Perplexity cites sources inline, shows its work, and is built around the "find the answer and verify it" workflow. If research is your job, that design is better. ChatGPT's search is fine, but citations feel bolted on by comparison. Where ChatGPT wins is everything around the research: brainstorming, drafting the thing, analyzing the papers you found, coding up the analysis. The better generalist. Perplexity, the better specialist.
Honestly? Most researchers I know use both. Perplexity for finding, ChatGPT for thinking. An AI tool pricing comparison says the two-subscription research stack is defensible at these prices. Pick one if you must, but know what you are giving up. Also, Perplexity's free tier is generous enough that plenty of people never pay. Subscribe only when you actually hit the limits. ChatGPT's free tier pushes heavier users to Plus faster, so the value math differs. Two weeks of real usage beats two months of reviews, every time.
For teams, it comes down to the collaboration pattern you already have. Perplexity's team features center on shared collections and libraries. ChatGPT's center on shared GPTs and workspace controls. Match the tool to how your group already works. And check the retention policies if your research touches anything sensitive.
I compare AI chatbots head to head with pricing at aitoolguide.fyi. Selling a research tool? Sponsored placements put you in front of buyers mid-search.