How many voices does Grok have?

As of October 2026, xAI’s text to speech docs list 28 built-in voices (checked 17 Oct 2026): the five original Grok app voices Ara, Eve, Leo, Rex and Sal, plus Altair, Atlas, Aurora, Carina, Castor, Celeste, Cosmo, Helios, Helix, Iris, Kepler, Liora, Lumen, Luna, Lux, Naksh, Orion, Perseus, Rigel, Sirius, Ursa, Zagan and Zenith. Custom cloned voices come on top.

Does Grok have 26 or 28 voices?

28. xAI’s announcement of 6 Jul 2026 added 21 flagship voices to the original 5, which made 26; xAI’s text to speech docs now list 28, so a count of 26 is out of date.

What is the default Grok TTS voice?

Eve. If a request to POST /v1/tts leaves out voice_id, xAI uses eve. Voice ids are case-insensitive, so eve, Eve and EVE all work.

Do all Grok voices speak every language?

Yes. Voice and language are independent in the Grok TTS API: any built-in voice can speak any of the 20 supported languages, and auto-detect picks the language for you.

All 28 Grok Voices: Ara, Eve, Leo, Rex, Sal and More

Every built-in voice of the xAI Grok Voice API in one list. Hear Ara, Eve, Leo, Rex, Sal and 23 newer voices with your own text, and get the voice_id for the API.

As of October 2026, xAI’s text to speech docs list 28 built-in voices (checked 17 Oct 2026). xAI’s announcement of 6 Jul 2026 added 21 flagship voices to the original 5, which made 26, so a count of 26 is out of date.