Built for voice agents that can't wait 600ms

Soniox: Soniox TTS Realtime v1

soniox/tts-rt-v1
active tts 1 provider
Compatibility only. Upgrade recommended.

Removed upstream by Soniox on 2026-08-31 and auto-routed to tts-rt-v2, still served here under the tts-rt-v1 id as a compatibility alias for clients pinned to it.

Playground

Soniox real-time streaming text-to-speech model.

AuthorSoniox
Languagesmultilingual
VoicesLoading...
Response formatsMP3 · WAV · PCM · Opus · AAC · FLAC · 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
Soniox 9 params
soniox
$0.0141
—
TBD

Supported languages

No reviewed language list for this model yet.

Voices

Features

Text to speech

Generates spoken audio from text input.

text_to_speech
Streaming

Real-time streaming audio output over WebSocket.

streaming
Synchronous

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

synchronous

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: "soniox/tts-rt-v1",
  outputFormat: "mp3_44100_128"
}, {
  queryParams: {
    provider: {
      "only": [
        "soniox"
      ]
    }
  }
});

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