What do pending usage, confirmed usage and balance mean?

Pending usage estimates the additional Characters for this session's unconfirmed rounds if they complete normally. It is not a confirmed charge and is not the same as the full balance reserved to continue capturing audio. Confirmed usage is the Characters already settled in this session, not the account's lifetime consumption. The timer shows elapsed session time, not billable audio duration.

After capture stops, the final part may still be processing, so pending usage need not immediately become zero. Successful completion moves usage into confirmed; rounds without translation or with translation errors release their reservation without affecting other normal rounds. If the balance becomes insufficient, new audio stops being accepted and the current round is finalized under the normal-completion or failure rules. Check the session's final usage: a temporary reservation is not evidence of duplicate charging, and an unchanged page alone does not prove a refund.