You can literally see some mistakes in the answers made by the brave AI and I hope you really know about them. Although I was quite amazed to see some right answers which I was not expecting to read. For example, it says on BTT they ban without any explanation, and on ALTT they don't. I mean how would AI have gotten this fact? As we all know AI gets data from the existing data available on the internet maybe someone stated this fact in some of his posts. Although I agree with this fact.
Overall I don't use Brave browser so I think I can't test there AI without installing the browser. I will give it a try someday. Till then I am ok with GPT as it is still good for me. There are many crypto projects exists based on AI, like myshell, holoworldai etc. etc. They are also innovating the AI technology. I hope we won't have to depend on installing browsers like Brave (CMIIW about installing browser in order to use AI of Brave).