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xAI · Audio

Grok Voice TTS API pricing

xai/grok-voice-tts-1.0

Text-to-speech. Grok Voice TTS by xAI, routed through INFRO on a xAI account you connect — alongside every other provider you run. xAI bills you for it directly, on that account and at your own rate. INFRO adds routing, failover, request logs, cost attribution and policy around it, and takes no part of what you pay xAI.

Pricing

Per 1M charsUSD · updated 2026-10-05

xAI rate

$15

per 1M chars, billed to you by xAI

INFRO adds

$0

0% markup on model spend

Calling Grok Voice TTS

POST /v1/audio/speech
import os
from infro import Infro

client = Infro(api_key=os.environ["INFRO_API_KEY"])

audio = client.audio.speech.create(
    model="xai/grok-voice-tts-1.0",
    input="Every AI model, one API.",
)

What this modality supports

  • Text to speech
  • Music generation
  • Transcription
  • Diarization

Text-to-speech with streaming playback, full-track music generation, and transcription with timestamps and diarization. Billed per character generated, per track, and per hour transcribed.

QuickstartGet a key

Alternatives for text-to-speech

Same modality, nearest in price. All of them share the request shape above, so comparing them is a one-word change.

Work out what Grok Voice TTS would cost you

Put your current spend on this model into the calculator and see the same workload priced here — or have us read your real usage.

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