Ability to use Free models + 1 more quick question?

[YouveGotMeowxy]

• Is there a way to just login with my usual ChatGPT credentials on the webpage? I have a lot of previous stored convos there, and it would also allow me to add all the other goodness of this app to it, and have it in it's own separate app all at once. I currently just use Brave to "install as app" which is ok, but having it in this app would be better.
• Same question as above, but for Grok?
• Last question: Is it possible to do one query and have that query sent to multiple AI's at once, and then have their individual results show in their own "tab". ie. I type in "hi there" and ChatGPT and grok give their response in their own tabs?