Hey, RTK saves between 2% and 7% on costs, it highly depends of your usage, to get more savings use a specific pipeline (which can reach 20% costs savings) : https://www.rtk-ai.app/pipelines/

By default what run is the bash compression pipeline, which is what RTK has been known for, but you can go further with others pipeline with smart routing for example.

You can build your own as well