CKEditor 5 offers various core features out of the box, including basic formatting and styling as well as advanced productivity features. Some of the features are premium (like Real-time Collaboration with Comments and Track Changes, Revision History, document converters, or the Productivity Pack plugins) and require additional license to work. You can test these as a non-commitment 30-day free trial.
To see the most up to date list of features available in CKEditor 5, refer to the features overview.