Obtaining the odds of going all-in before the flop against a single opponent are:
AA will earn 85% of the time
KK will win 82%
QQ will earn 80%
JJ will win 77%
AKs will win 64%
KQo will earn 60%
JTs will earn 56%
K4o will earn 50%
27th will win 34%
23rd will only earn 29% of the time
So we can see that 15% of the time you can lose, but considering the long term, we can win with AA 85% of the time against a villain.
However, with more than one opponent, these probabilities are very difficult to calculate for sure, there are many variations, at most, 'AA' is very difficult to want to give up ...