For small and medium businesses, Power BI Pro is optimal to deliver full business intelligence capabilities to all users. Power BI Premium is best for large enterprise organizations who need a large number of people across the business to be able use Power BI to view dashboards and reports.
The biggest difference between Power BI Free & Power BI Pro lies in your ability to create and share dashboards with other team members. Power BI Pro users can publish content to app workspaces, share dashboards with other Power BI users and subscribe to dashboards and reports.