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Grok TTS

Grok TTS is xAI's text-to-speech model with five expressive voices, speech tags, and telephony codec support, available through Vercel AI Gateway.

index.ts
import { experimental_generateSpeech as generateSpeech } from 'ai';
import { gateway } from '@ai-sdk/gateway';
import { writeFile } from 'node:fs/promises';


const result = await generateSpeech({
  model: gateway.speechModel('xai/grok-tts'),
  text: 'Hello from the Vercel AI Gateway!',
  voice: 'eve',
});


await writeFile('speech.mp3', result.audio.uint8Array);
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Provider
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ZDR
No Training
Release Date
xAI
Legal:Terms
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Privacy
$15/M chars
03/16/2026