2007 Kia Optima chip in key?

Being that new, most likely yes.

my 2008 optima has a chip.

I have a 2007 Kia and there is no chip in the key

if the key you have has a little cross at the top of the silver part then yes it is chipped. You will have to get that replaced at the dealership. Otherwise if it doesn't then you can get that key made anywhere.

You need to go to dealer for a new key fob. i hope that helps.

Don't understand