Teammates Chauncey Billups, Shelden Williams, Anthony Carter and Renaldo Balkman will follow Anthony to New York.
In exchange, the Knicks will send Raymond Felton, Danilo Gallinari, Wilson Chandler, Timofey Mozgov, the Knicks' 2014 first-round draft pick, the Warriors' 2012 second-round pick, the Warriors' 2013 second-round pick and $3 million in cash.
The deal ended a seven-month saga in which Anthony and his representatives leaked the small forward's desire moved to New York last summer and made it clear that Anthony would not sign a three-year, $65 million extension offer that the Nuggets had on the table.
A Nugget team source was quoted as saying on the official NBA website: "He wanted to be in New York, and we worked with him and his people.
"We worked it out. It's a win-win. You never get fair value for a player like that, but we have to move on as an organization. I don't think the fans have gotten the true Nuggets this season."