Assistant API Pricing question about Retrieval pricing

Retrieval $0.20 / GB / assistant / day (free until 01/12/2024)

I am not quite understand how this work.
for example I have a file (not over 1 GB) in one assistant for 30 days. so it will charge me 20 cents * 30days and as long as I dont delete this assistant it will keep charging me 20 cents per day for storage?
Someone please help me understand thanks


Same question, Iā€™m trying to find ways to optimize Assistant pricing, and I would like to use some larger files.