Grok TTS

by OpenAI

xAI's text-to-speech with expressive voices and speech tags. Supports mp3, wav, pcm, mulaw, alaw.

Context window
Max output
Input price
/1M
Output price
/1M

Available routes

The same Grok TTS runs on 1 route through the Opper gateway. Each route has its own data-handling posture.

ProviderRegionZero data retentionTrainingLoggingContractInputOutput
xAIUSOpt-inNo (opt-in)
Up to 30 days for abuse monitoring
Enterprise

Human review: Abuse-flagged only

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Grok TTS by OpenAI — pricing, benchmarks, hosting routes | Opper AI