creating an ai avatar of a loved one that will talk with u

I believe you're talking about HereAfter. Which offers AI learning so that you can continue holding conversations with your loved ones after they pass away. "According to the wisdom of Kabbalah, if we were to develop like nature and its laws, and aspire to a more advanced human state, we would need no such technological means." - Dr Michael Laitman

So I would be very careful with this, unless you are into Jewish Mysticism.