Billing::Plan.find_or_create_all_by_attrs!( standard => {1.month: 10, 1.year: 100}, pro => {1.month: 50, 1.year: 500}, enterprise => {1.month: 100, 1.year: 1000} )
Just a small Ruby syntax correction for your example:
Billing::Plan.find_or_create_all_by_attrs!( standard: {1.month => 10, 1.year => 100}, ... )