Pro plan users have to constantly manage credits month over month based on their usage with upgrades and downgrades. This applies to both monthly and annual plans, but disproportionately affects monthly billing cycles.
Add functionality that allows users to add additional credits based on defined thresholds and/or time in billing cycle.
Example
When I hit 80% of my current credit usage I want to add a 25% increase in my total credit allotment so I can handle an unexpected increase in usage without having to manually upgrade in the API Dashboard.