Generative AI has the potential to drastically change what users expect from search, and companies such as Microsoft and Google are placing big bets on what it might yield. But despite the hype around ChatGPT — and generative AI overall — there are major practical, technical, and legal challenges to overcome before these tools can reach the scale, robustness, and reliability of an established search engine such as Google. These include problems of keeping large language models up to date, issues around sourcing, and convincing fabrications by the AIs. That said, these tools might be strong fits for narrower, more specialized forms of search.