EC2Data by 
DoiT.com
EC2 discount rates across every commitment option, in one table. Linux · Shared tenancy · No pre-installed software.
About EC2Data by DoiT.com: Click any instance type to view detailed information and comparisons in one place, including pricing, region availability, generation comparison and more. Newer generations are often faster, cheaper, and more efficient and yet many workloads still run on hardware from 2017 or earlier. Use the filters to focus on specific launch years, purchasing models, or commitment terms.