A software developer was charged significantly more than expected for AI token usage due to hidden cache replay mechanisms in the Cursor Ultra platform, despite the UI indicating a fixed context windo

The user is unable to understand or predict their billing for Cursor Ultra plans due to an invisible caching mechanism that consumes prepaid usage without clear indication in the UI.

A software developer was charged significantly more than expected for AI token usage due to hidden cache replay mechanisms in the Cursor Ultra platform, despite the UI indicating a fixed context window.