Since Lacazette arrived at the Emirates Stadium, Giroud has not started a game in the Premier League, with the long-serving Gunner only beginning fixtures in cup competitions.
However, Wenger has claimed that there is "no difference" between the pair, despite Lacazette being preferred to his French compatriot since the start of the campaign.
Wenger told SFR Sport: "Giroud, Lacazette - it's a never-ending debate. I think both of them are very good players.
"For me there's no difference, and each time it's very hard to decide who starts."
On Sunday, Lacazette netted his fifth goal for Arsenal as the North London outfit thrashed Everton by a 5-2 scoreline.