This is AI but not “Discourse AI”
It’s Discourse Chatbot 🤖. The clue is in the name 
(although you can change its name!) Please post issues in the Chatbot Topic. But in any case the model will be set in the Chatbot settings :).
Suffice to say activate Chatbot’s verbose logs in settings, diverting info to warn (so you can read them in prod) and check /logs