The most useful features of Authorea --- hosting, collaborating, publishing --- are available for free to anyone. Premium plans allow for unlimited private documents, enhanced data hosting, and priority support.
Student / educator
Group plans are useful to small research groups who want collaborate in a private workspace and manage a group portal at a custom domain. Publisher plans allow for cost-effective publishing with EEO integration and lightweight peer review. Enterprise plans involve a dedicated installation of Authorea on a private cloud for maximum security and privacy.