Grok Voice TTS 1.0

Grok Voice TTS 1.0 is xAI's text-to-speech model, turning text into natural, expressive spoken audio for voice agents, accessibility tools, podcasts, and interactive audio.

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input · usd / 1m chars

$15.00

modalities · in → out

model type

Text to speech

pricing

base api ratesusd per 1m characters

input: $15.00

providers

xAI hosts Grok Voice TTS 1.0. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

specifications

takes text in, gives audio outxai/grok-voice-tts-1.0

creatorxAI
model typeText to speech
context windownot published
maximum outputnot published
input
takes text in, gives audio out
outputaudio
tool callingnot verified
endpoint/v1/audio/speech

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

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

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 xAI's text-to-speech model, turning text into natural, expressive spoken audio for voice agents, accessibility tools, podcasts, and interactive audio. It offers a roster of voices, inline speech tags for laughter, whispers, and pauses, custom voices cloned from a short reference clip, and WebSocket streaming.

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 →

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. model descriptions and release dates, where available, use the creator sources linked under the answers above.

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