xAI adds 21 multilingual flagship voices to Grok Voice and upgrades original five
xAI released 21 new flagship voices for Grok Voice, all natively multilingual and available now in the Realtime Voice Agent API, the Text to Speech API, and the Grok Voice Agent Builder. The original five voices (Ara, Eve, Leo, Rex, Sal) were retrained with an improved recipe for more natural pacing, phrasing, and emphasis; developers can also clone a custom voice from about one minute of audio.