> For the complete documentation index, see [llms.txt](https://docs.distribute.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.distribute.ai/distribute-for-enterprise/enterprise-inference-api/billing/text-to-speech.md).

# Text To Speech

Users are billed for text-to-speech (TTS) based on the duration of the generated audio, measured in seconds. Billing starts at a minimum of one second per request, ensuring a fair and consistent model that reflects actual usage while covering system overhead. This per-second approach allows users to scale efficiently and only pay for the audio they generate, making it both transparent and predictable.

| Model      | Audio Second Cost |
| ---------- | ----------------- |
| Chatterbox | $0.0030 / Second  |

Stay tuned for more speech models.

Pricing subject to change.