There are quite a few things to consider before deciding to go All In or call an All In with AKs: how your opponent played so far at the table, stack sizes, your position at the table(if there are other people left that can get involved, then AK isn't looking that strong in a multi-way pot), your
bankroll and how winning/ losing this hand can influence it...
Still, IMO your 'default' should be to be aggressive with AK(especially if it's suited) as with this hand your opponent has lower chances to have AA or KK and you are either big favorite against other strong hands that some recreational players might just 'gamble' with(AQ, AJ, KQs...), or flip against a pair except AA and KK that you block; don't forget that by being aggressive(if you are the one who went All In), you can make your opponent fold their hand preflop and avoid a flip situation too...