Text to speech / xAI

Grok Voice TTS 1.0

Grok Voice TTS 1.0 is a text-to-speech model from xAI, available through the Impossibl API. The advertised input rate is $15.00 per million input characters.

api id: xai/grok-voice-tts-1.0

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how much does grok voice tts 1.0 cost?

published base api rates · usd per 1m characters

input
$15.00

rates are published by the impossibl api. balance-purchase fees, taxes, tool charges, and workspace-specific pricing are separate.

specifications & capabilities

creator
xAI
model type
Text to speech
context window
not published
maximum output
not published in the catalog
input types
text
output types
audio
tool calling
not verified in the catalog

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports.

available voices

altair, ara, atlas, carina, castor, celeste, cosmo, eve, helios, helix, iris, kepler, leo, lumen, luna, lux, naksh, orion, perseus, rex, rigel, sal, sirius, ursa, zagan, zenith

published endpoint

/v1/audio/speech

see the model documentation for integration details.

independent benchmarks

Benchmark results are not available for this model yet.

frequently asked questions

What is Grok Voice TTS 1.0?

Grok Voice TTS 1.0 is a text-to-speech model from xAI, available through the Impossibl API.

How much does Grok Voice TTS 1.0 cost?

Grok Voice TTS 1.0 costs $15.00 per million input characters through the Impossibl API. All rates are in USD.

view the pricing table ↑

What inputs and outputs does Grok Voice TTS 1.0 support?

Grok Voice TTS 1.0 accepts text as input. Grok Voice TTS 1.0 returns audio. Available voices include altair, ara, atlas, carina, castor, celeste, cosmo, eve, helios, helix, iris, kepler, leo, lumen, luna, lux, naksh, orion, perseus, rex, rigel, sal, sirius, ursa, zagan, and zenith.

How do I use Grok Voice TTS 1.0 through an API?

Grok Voice TTS 1.0 is available through the Impossibl API. Use xai/grok-voice-tts-1.0 as the model identifier with /v1/audio/speech. The quickstart explains how to create an API key and send your first request.

follow the api quickstart →

sources & coverage

this page describes Grok Voice TTS 1.0 as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes.

view the source catalog ↗

model descriptions and release dates, where available, use the creator sources linked in the faq. api prices and limits use the impossibl catalog. benchmark results, where available, are credited to Artificial Analysis in the benchmarks section. report a correction →