Amazon Aurora with MySQL Compatibility Supports T3.large Instances

Amazon Aurora with MySQL compatibility now supports T3.large instances, in addition to the T3.medium, T3.small, and R5 class instances already available. Using T3.large instances with Amazon Aurora MySQL is a cost-effective option for smaller workloads such as test, dev, and QA, while still giving you the option to use larger class instances for production deployments. 

Source:: Amazon AWS