The Blues travel to Old Trafford to face Manchester United this afternoon, where victory would see Jose Mourinho's side establish an eight-point cushion over City, but Pellegrini insists that it is still all to play for on the title front.
"We are just starting the season, we have 80 points left to play for," Pellegrini is quoted by BBC Sport as saying after his side's defeat.
"So it is early. We will continue fighting because there is no title being handed out at the moment."
Pellegrini's side now gear up for the Manchester derby with local rivals United next Sunday.