Here’s a quick chart that I created based on reading up from different sources about licenses required in office 2013/office 365 to use Power View and/or Power BI. It was not straight forward and I had to use multiple sources to find this information, so hopefully this helps you:
Please Note:
Double check w/ official sources. The chart is meant to guide to find the right license for your needs. Please use this as a starting point & use official resources before making a purchase decision.
Sources Used:
http://www.microsoft.com/en-us/powerBI/pricing.aspx#fbid=ygmkLW5EEH9
http://cwebbbi.wordpress.com/2013/02/01/office-2013-office-365-editions-and-bi-features/