1
One credit per delivered prompt
Each delivered AI prompt uses one credit, whether you use Default or choose a named model. AI Memory Match uses one credit per delivered pair.
2
Check your balance
Open Account → Billing.
3
Know which games spend them
Fill in the Blank, Context Detective, Synonym Sprint, Antonym Challenge, Synonym Match, and Opposite Match spend credits. The other modes do not. See Which games use AI credits.
4
Monthly vs purchased
Included monthly credits reset each billing month and do not roll over. Purchased credits do not expire. Details: How credits work.