XAI GROK / AUDIO
Grok TTS API pricing
$9.45 per 1M characters
Grok TTS costs $9.45 per 1M characters. Call it with model ID grok-tts at https://api.outrun.to/v1 using one prepaid Outrun key. Prices as of October 30, 2026.
grok-ttsUSD / 1M CHARACTERS
How much does Grok TTS cost per 1M characters?
Standard
| Usage | Outrun |
|---|---|
| Input | $9.45 |
Billed prices, rounded up to the cent. Prices as of October 30, 2026.
- Billing unit
- 1M characters
What is Grok TTS?
Grok TTS is a audio model in the Outrun catalog. The catalog lists $9.45 per 1M characters.
What are the Grok TTS model details?
| Model detail | Value |
|---|---|
| Kind | Audio |
How do I call Grok TTS?
Endpoint and parameters from the model setup reference. This is the request outline; supply your input as described in the API reference.
POST /v1/audio/speech
model: grok-tts
voice: eve
response_format: mp3What request parameters does Grok TTS take?
The setup reference lists the endpoint and options below. Follow the API reference for the prompt, file or reference-image fields.
| Request field | Value |
|---|---|
| Endpoint | POST /v1/audio/speech |
| voice | eve |
| response_format | mp3 |
How does Grok TTS compare with other audio models?
| Model | Rate |
|---|---|
| Grok TTSThis model | $9.45 per 1M characters |
Common questions about Grok TTS
How much does the Grok TTS API cost?
Grok TTS costs $9.45 per 1M characters. Prices as of October 30, 2026.
What model ID and base URL do I use for Grok TTS?
Use the model ID grok-tts with the base URL https://api.outrun.to/v1 and your Outrun API key.
How is Grok TTS billed?
Per 1M characters, from your prepaid USD balance. There is no subscription.
Does Outrun store my prompts when I use Grok TTS?
Outrun does not store your prompts, images or outputs unless you choose to save them.