Mostly GPT, but for World of Warcraft, GPT is absolutely horrible. It's like it has been corrupted by the 20 years of bad/incorrect user data, or maybe just the sheer amount of it in general.
As an example, someone typo'd an abbreviation, so I asked GPT and it gladly made up something for me. So I gave it a random abbreviation, and it did the same (using its knowledge of the game).
Even when I tell it the specific version I'm playing it gets so much wrong it's basically useless. Item stats, where mobs are located, how to do a certain quest - anything. So I'm back to using websites like wowhead and google.