After winning five Champions League titles as a club coach, the Italian will make his managerial debut in the sport's biggest tournament at the helm of a Brazil side that has not lifted the trophy since 2002.
"It's a new experience, it's a new responsibility to represent the country of football," Ancelotti said ahead of Brazil's Group C opener against Morocco in New Jersey on Saturday.
"It comes down to two words: responsibility and honour. It's a unique and very beautiful moment in my career.
"We have a team that can compete with every team in the world, we're convinced of that. It's a team with quality and experience, and with absolute confidence that it can compete with anyone," he added.
Ancelotti, 67, predicted a very "balanced" World Cup and felt his players were well prepared going into their game with Morocco, in a section that also includes Scotland and Haiti.
Brazil landed in the United States with doubts over their prospects after a rocky qualifying campaign, losing six of 18 matches. They finished fifth, which in previous years would have forced them into the play-offs.
They also arrived without injured forwards Rodrygo and Estevao, while Neymar will miss the opening game.
The 34-year-old suffered a right calf injury in mid-May and is expected to return to training next week, according to Ancelotti. He has not played for his country since 2023.
"Neymar is working very hard to recover as quickly as possible," said the coach.
"We called him up not only for his football ability, which is indisputable, but also for the experience and example he can give to the younger players in the group."
FIFA World Cup 2026
The 2026 World Cup will be held from June 11th to July 19th in the United States, Canada and Mexico. The tournament will feature 48 national teams and will be played in 16 modern stadiums.
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