Googling. Just today I asked Chat-GPT (not 4) for papers or books about some topic, and it gave me five pointers. Two of them contained useful information, the rest was hallucinated.
GPT 4 with browsing isn't quite there yet either, usually takes at least two or three attempts to not have it fail somewhere in between. Should be pretty good once they iron it out though.
You don't need to use Edge to be able to utilize Bing Chat :)
https://github.com/sunner/ChatALL
This one let's you send to 9 models simultaneously and in parallel. Interesting the differing responses for each.