New Zealand fly-half Daniel Carter believes the world champions are able to "out-think" South Africa in Auckland on Saturday.
The All Blacks are unbeaten at Eden Park since 1994 and arrive at the fixture unbeaten in 2013, much like their opponents this weekend.
Carter praised South Africa's all-round game after being limited in recent seasons, calling the fixture one of the biggest since New Zealand lifted the Rugby World Cup two years ago.
"This is going to be the biggest match of our year so far, and even potentially one of the biggest since the World Cup because of the form they're in," said Carter.
"Their backs are scoring good tries, their outside backs are making breaks, and they're a bit more of an all-round package - whereas in previous years they have been quite one-dimensional.
"The thing we pride ourselves on is having the ability to out-think them as well, but it's going to be a challenge this week."
All Blacks head coach Steve Hansen highlighted the selection of Hurricanes hooker Dane Coles as key to the 26-year-old's development at Test level, with the move seeing Andrew Hore drop out of the matchday squad.
"He's somebody we see as the future and we think now's the time to give him an opportunity to go against the best," said Hansen.
"He's the guy we see going forward. We just think it's time to give him an opportunity in the big ball park and see how he goes."