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Grok TTS

Generate speech with 5 expressive voices, speech tags, and telephony codecs.

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);

Playground

Try out Grok TTS by xAI. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.

xai logo
Text
The text the model will read aloud.
Voice
xai logo

Your generated audio will appear here

Providers

Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.

Provider
Context
Latency
Throughput
Input
Output
Cache
Web Search
Per Query
Capabilities
ZDR
No Training
Release Date
xAI
$15.00/1M chars——
03/16/2026

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Capabilities
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