[Zarath]

Depends on your betting spread and table rules. But at a deck in a half you're probably looking at around 0.75% for a pretty standard ruleset [1]

The casino I usually play at cuts at under a deck and also has a side bet (Over Under 13) with even better odds than the blackjack game if you use a different count. It can also be gamed many other ways (they give $5 and $2.5 chips, but don't pay quarters, so if you bet $7.50 for your hand, they pay $11.50, essentially improving your odds even further).

[1] https://www.qfit.com/book/ModernBlackjackPage309.htm