Can this GPT actually perform a patent search or does it just guide me through one?
It primarily guides you through the process — it teaches you how to structure queries across patent databases like Google Patents, USPTO, Espacenet, and WIPO Patentscope. With web browsing enabled, it can execute searches and bring back results, but it is designed to make you a better patent searcher rather than to replace a professional patent search. For anything with legal or commercial stakes, the guidance is useful but the final search should be validated by a patent professional.