Here's the full list of the Macs compatible with macOS Monterey.
You can learn more about the new features in macOS Monterey here.
macOS Monterey Compatibility List ● iMac: Late 2015 and later ● Mac Pro: Late 2013 and later ● iMac Pro: 2017 and later ● Mac mini: Late 2014 and later ● MacBook Air: Early 2015 and later ● MacBook: Early 2016 and later ● MacBook Pro: Early 2015 and later