Billing
Sparks pay for generations — buy a pack and the balance is credited within seconds of checkout. Every run is estimated up front and only charged when it succeeds.
Sparks balance
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1 Spark ≈ $1 of model cost · mock models are free
How Sparks work
- Each generation is estimated from the model rate card before it runs — a run that would overdraw the balance is refused with a top-up prompt.
- Only successful runs are charged; failed and mock-model runs are free.
- Sparks never expire. Receipts go to your account email.