Prepaid Credit Usage Guide
All Theta One API plans include monthly credits that are automatically granted. Pro, Pro+ and Enterprise plans can also purchase additional credits.
Monthly Credits
Each plan includes a set amount of credits granted automatically on each billing cycle:
| Plan | Monthly Credits | Approx. STT Time | Subscription Bonus |
|---|---|---|---|
| Free | 0.20 credits | ~8 min | — |
| Starter | 5 credits | ~3.5 hrs | — |
| Pro | 24 credits | ~16.7 hrs | +20% |
| Pro+ | 360 credits | ~250 hrs | +20% |
| Enterprise | Custom | Custom | Custom |
Subscription credits expire at the end of each billing cycle. Unused credits do not roll over to the next month. Credits purchased via top-up never expire.
Checking Your Balance
Click Billing in the sidebar of the API Console to view your current balance and credit history.
- Current Balance: Total credits currently available.
- Credit History: History of credits granted, topped up, and consumed.
Purchasing Additional Credits (Pro, Pro+ & Enterprise)
If you're on a Pro, Pro+ or Enterprise plan, you can purchase additional credits at a 1:1 rate ($1 = 1 credit). The 20% subscription bonus applies only to monthly subscription credits, not to top-up purchases.
- Go to Billing in the API Console.
- Click the Top Up Credits button.
- Select the amount you want to top up (minimum $10 → 10 credits).
- Click Pay with Stripe to proceed to the payment page.
- Complete the payment. Credits are added instantly and never expire.
Please do not refresh the page or close the browser while payment is processing. If a problem occurs, please contact us at support@thetaone.co with your payment time, account email, and amount.
How Credits Are Used
Credits are automatically deducted when you make API calls. The deduction amount depends on the service used:
- STT: 0.0004 credits per second of audio
- Pronunciation Feedback: 0.0006 credits per second of audio
When your credit balance reaches zero, API calls will return 402 PAYMENT_REQUIRED.
Credits with an expiration date (e.g., monthly subscription credits, promotions) are consumed first, followed by credits without an expiration date (e.g., top-up purchases).