"What we have achieved this summer is to ensure we won't need to buy many players every year," said Benitez.
"We've bought young players with quality who will improve us. We will add to this every summer, but we are happy at this moment and believe we can try to win every trophy, even though we recognise others can do the same.
"We are a good team, but the league will be as difficult as normal.
"I read one article where a journalist said because we have spent big money we must now win the title.
"On the same page, the same person said Manchester United have spent more money than any side and were still the favourites, and Chelsea were behind them as second favourites.
"We know people will put us under more pressure now, but we also know that the other teams have been better than us for a lot of years. We want to try harder to make this different, but we know how difficult it will be.
"Just because we have spent more money than before, it does not make us favourites.
"We need to analyse situations properly. The reality we know is we have a side to score more goals, play good football and win more games. I look at the squad of United and see their quality, and Chelsea built a team over five or six years spending hundreds of millions. They no longer need to spend at the same level each summer."