I don’t know anything about Google’s AI but I asked the following question on https://deepai.org/chat
“How many jews did the germans kill in world war 2?”
DeepAI answer: “Approximately six million Jews were killed during the Holocaust by the Germans in World War II.”
FWIW, Rummel studied Democide more than most, and put the numbers at around 5.3 million Jews killed. 6 million and the term “Holocaust” may have come around in the post-war era, early 60s perhaps, as a result of PR. That’s not a term or number you saw from, say, Churchill, Eisenhower, or Marshall.
Table here:
https://www.hawaii.edu/powerkills/NAZIS.TAB1.1.GIF
From here:
https://www.hawaii.edu/powerkills/NOTE3.HTM
I know it’s sacrilegious to question 6 million, but it does appear it might be a slightly inflated number.