BBC F1
Hamilton on RedBull
Lewis Hamilton says Red Bull could be embarking on an era of domination similar to his with Mercedes.
Hamilton said: "The chances are very high that that's already happened. They are already on that way.
"It's going to be very tough for teams to close that gap."
Max Verstappen is on course for a second consecutive title after winning nine out of 14 races so far, while Red Bull are poised for their first constructors' title since 2013.
However, Hamilton said he still believed his Mercedes team could make up the necessary ground to challenge Red Bull.
"If your car is fast one year, it evolves into a faster car the next year, so the gap they have now will be very hard for anyone from third down to ever close in this cycle of car design," Hamilton said.
"But we have won the last eight world titles. As a team, we've got amazing and talented engineers. I don't doubt they can.
"There are limitations with budget and wind tunnel and CFD time and we have to be very clear and precise in the direction we want to go and very efficient in our time."
Hamilton praised Red Bull for starting this year's new era of technical regulations so strongly, saying that they were "a great team and they've done an amazing job".
And he singled out their chief technical officer Adrian Newey for special praise. Newey did his university thesis on 'ground effect', the aerodynamic phenomenon that has been reintroduced into F1 by this year's rules.
Hamilton said: "They have the aero balance great. They've got great ride quality. He [Verstappen] doesn't ever have any problems with bumps. When you have a stable platform like that…
"They had a great car last year as well. Adrian Newey doesn't generally build bad cars. He has built amazing cars over the years. My first championship car was a evolution of one of his cars.
"I know he did his thesis on ground-effect floors so it is no surprise. He is one of the only ones who draws by hand. His understanding has been an advantage them and they have done a great job."