The manager is pleased to see his German star adding leadership qualities and responsibility to his game.
The German midfielder has been in fine form so far for the Gunners, and claimed his 10th assist of the season on Sunday as he set up Kieran Gibbs to score the equaliser against Tottenham.
It was another fine display from Ozil, whose assist made him the first ever player to provide an assist in six consecutive games in Premier League history.
And Wenger was delighted with his performance again, but says adding those two key components to his game have made his a very great player.
“He was outstanding again,” he told arsenal.com.
“He has grown into a very great player as he has added commitment, leadership qualities and responsibility and I’m very pleased with his development.”
Reflecting on the game, Wenger was keen to highlight that how his side have once again shown their mental strength this season.
The Gunners were disappointed to come away with a point against their rivals, as a win would have seen them go two points clear at the top of the table after Manchester City’s draw.
Instead, they had to fight back in the second half following a labored first half display, and Wenger was keen to praise them for once again showing they have the mental resources required to compete in the Premier League.
“In the last six league games we have had five wins and one draw and we have shown again that this team has great mental resources, which is quite important for the future,” he added.