Wenger made two failed bids for Liverpool striker Luis Suarez in the summer, but the Frenchman has insisted that he is happy with his forward options, and has pointed towards Giroud's early-season form as proof that his side have enough firepower.
"If some clubs were interested in buying [Suarez], then it is because he was playing quite well, but what is important for me are the players who play for Arsenal against Luis Suarez," Wenger told The Metro.
"I believe that Giroud has proven since the start of the season that he is an exceptional striker and I am convinced that he will be up for it.
"Giroud is a real centre-forward who uses his power – he is really central. Suarez is more a player who goes on the flanks and is more a dribbler."
Arsenal host Liverpool in the Premier League at 5.30pm.