Having a pretty bad experience with GPT-5 and web searches – it either hallucinates or can't find web results unless I manually toggle the 'Web Search' button? And even then, responses are kinda...meh?
GPT-4o definitely didn't do this, and it seems like folks on Reddit are hating this rollout too: https://www.reddit.com/r/ChatGPT/s/zddfnoFDnR
@viticci I haven’t used it that much yet, but this has pretty much been my experience as well.
Tried to search for information about an Apple API earlier, and the standard model couldn’t find any results. Tried the thinking model, and it gave me a bunch of results without links.
Went and did a regular search instead, and found a bunch of relevant results 🤷♂️
Federico Viticci 
Kristoffer Johansson