Understanding Billing on the Gemini API: Free vs. Paid Usage

As I explore the options for the Gemini API, I find myself at a crossroads regarding its billing structure. Currently, the free tier has been a useful resource, but with the impending removal of access to pro models, I’m contemplating enabling the paid tier.

This leads me to some crucial questions about the billing mechanics. When I activate the paid tier, will there still be any portion of free usage included? Specifically, I’m curious if the free features will remain accessible within the designated rate limits, allowing users to only incur charges for usage that exceeds those limits. Or is it the case that by enabling billing, I’ll be liable for all API calls made thereafter?

I’m reaching out to the community for clarification and insights on this matter. Anyone with experience navigating the Gemini API billing options, your input would be greatly appreciated!