The Italian team is level on points with Lotus in the constructors' championship after the opening two races of the year, behind only Red Bull.
The Ferrari team principal told Sky Sports News: "I don't know exactly where [we are], but for sure between the leaders. For sure Red Bull, in my view, is still the strongest at the moment, but we will see.
"There are tracks where our car will perform better, there are certain tracks where some others will perform better than ours. Mercedes have done a step, Lotus is very competitive. It will be an interesting and challenging season, but we will be there, no doubt.
"At the end of the day the championship is very long and it is important to stay cool and calm and make sure from the package we deliver the best. In terms of development, of course as everyone will do, we will try to develop the car and this is the target for every race."