Pricing Information
Theta One API uses a pay-as-you-go model where costs are deducted from your credit balance based on actual usage.
API Usage Pricing
| Service | Cost | Billing Unit |
|---|---|---|
| Speech Recognition (STT) | $0.0004 | per second |
| Pronunciation Feedback | $0.0006 | per second |
Calculation Examples
Speech Recognition (STT)
- 10 seconds of audio → 10 × $0.0004 = $0.004
- 1 minute of audio → 60 × $0.0004 = $0.024
- 1 hour of audio → 3,600 × $0.0004 = $1.44
Pronunciation Feedback
- 10 seconds of audio → 10 × $0.0006 = $0.006
- 1 minute of audio → 60 × $0.0006 = $0.036
Service Availability by Plan
| Service | Free | Starter | Pro | Enterprise |
|---|---|---|---|---|
| Speech Recognition (STT) | ✅ | ✅ | ✅ | ✅ |
| Pronunciation Feedback | ❌ | ✅ | ✅ | ✅ |
Pronunciation Feedback requires Starter plan or above
Free plan users attempting to call Pronunciation Feedback endpoints will receive a 402 PAYMENT_REQUIRED error. Please upgrade your plan to access this service.
Rate Limits (RPM)
| Plan | Requests Per Minute |
|---|---|
| Free | 30 |
| Starter | 100 |
| Pro | 500 |
| Enterprise | Unlimited |
Rate limits are applied per API key. Each API key can have its own rate limit up to the plan maximum.
Pricing Notes
- All prices listed are default rates. Custom pricing is available for Enterprise customers.
- Prices may change due to infrastructure cost fluctuations. We will notify you at least 14 days in advance via email and this page.
Custom Pricing Inquiries
For inquiries about custom billing (on-premises, annual unlimited use, volume discounts), please contact us at giopaik@thetaone.co.