Open.AI and ChatGPT itself. Ask it. The conversations ChatGPT feed back into the model, it's one of the ways they improve it. In particular, if you can get it to admit it's wrong on something, and it verifies that internally, it won't make the same mistake again. It's self-correcting in that way.
Can you cite something that doesn't have a disclaimer reading "May occasionally generate incorrect information" on this? It's news to me.