Chelsea have won all six league games and not conceded a goal to open up a six-point lead at the top of the table.
"I am sure the rest of the league is not giving up and it is definitely not cut and dried yet," said Lampard, 27.
"It is too hard to say how close the league is going to be. It is so early to be talking about a points gap.
"We played very well at the weekend and when we do it is hard for teams to beat us because we have a lot of quality in the side.
"Every team just has to push themselves as far as they can go - it is about them raising their standard to the one we have set.
"We know there are some tough games coming up and we must stay focused on the challenge. There is a long way to go but we must try and do what we did last year.
"It's a different motivation but we are still motivated. We are very driven to retain the title - as much as we were last season to win it for the first time in 50 years."
"I don't think the league is losing its edge at all, it will always have that excitement factor and that's the way it still is," he addd.
"I have seen some really exciting games this season and we have played some exciting stuff at Chelsea too.
"You want to win games first and foremost and excite the fans too but you have to remember that it is not always possible.
"Of course we would take winning every game 1-0 - it would be incredible to win every single game in a season."