Billing and payments
Add credits to your project and pay by credit card or stablecoin.
Star OS uses prepaid credits for model usage.
Billing is project-based
Billing is managed separately for each project. The project you select determines where funds are added and where model usage is charged:
- Top-ups and credit balance belong to that project only.
- API usage and model charges are deducted from that project's credit balance.
- Billing history, refunds, and transactions are recorded against that project.
- Credits and billing records are not shared across projects.
Choose the correct project before you add funds, send production traffic, or review a charge.
Add credits
Open Billing in the Console, choose a credit package, and complete payment. Credits are added to your project balance after the payment has settled.
Payment methods
Credit card
Pay by credit card in the Billing page. Card payment is completed in the secure checkout flow; Star OS does not store your card details.
Stablecoin
Pay with stablecoin from a connected EVM wallet. At launch, stablecoin payments use USDC on Base. Select the credit amount, connect the wallet, approve the USDC amount, then confirm the payment.
Always verify the selected network, wallet, and amount before approving or sending a transaction. Stablecoin payments are final after they are submitted to the network.
Payment history
Use the Billing history tab to review successful top-ups, refunds, and credit transactions. If a payment is still settling, wait for the transaction status to update before submitting another payment.
Managing costs
Model usage is charged against the credit balance for the project. Review the text generation models and pricing page before enabling production traffic, and use the Usage and Billing pages to monitor consumption.