Built for voice agents that can't wait 600ms

xAI: Grok Text to Speech

xai/grok-tts
active tts 1 provider
Playground

xAI's Grok text-to-speech: converts text into spoken audio with 26 expressive voices, inline speech tags and output formats from high-fidelity MP3 to telephony-optimized mu-law, selected by endpoint (/v1/tts) rather than by a model parameter.

AuthorxAI
Languages1 languages
VoicesLoading...
Response formatsMP3 · WAV · PCM · µ-law · A-law
Statusactive

Providers

Different providers can host the same model. Choose one provider when you need a fixed backend, or let routing select among them.

ProviderSlugPer 1k charactersLatencyiFor TTS, latency is measured as time to first byte of audio. For STT, latency is measured as time to first token.ModesUptime
xAI 5 params
grok
$0.015
—
Synchronous · Streaming

Supported languages

1 languages
English en

Voices

Features

Text to speech

Generates spoken audio from text input.

text_to_speech
Streaming

Bidirectional streaming TTS over WebSocket (wss://api.x.ai/v1/tts).

streaming
Synchronous

Synthesizes speech from fully-submitted text in a single synchronous request.

synchronous
Multilingual

Supports 20 languages (BCP-47) plus automatic detection.

multilingual
Inline speech tags

Supports inline speech tags for expressive control.

speech_tags

Code

Client
Mode
Language

ElevenLabs SDK streaming TTS

Routes the ElevenLabs SDK through allmodels and streams the audio response.

import { ElevenLabsClient } from "elevenlabs";

const client = new ElevenLabsClient({
  apiKey: process.env.ALLMODELS_API_KEY,
  baseUrl: "https://api.allmodels.io/el"
});

const stream = await client.textToSpeech.stream("voice_id", {
  text: "I'm sorry, Dave. I'm afraid I can't do that.",
  modelId: "xai/grok-tts",
  outputFormat: "mp3_44100_128"
}, {
  queryParams: {
    provider: {
      "only": [
        "grok"
      ]
    }
  }
});

const reader = stream.getReader();
for (;;) {
  const { done, value } = await reader.read();
  if (done) break;
  // Write value to your response, file, or audio playback pipeline.
}