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tts-rt-v1

soniox/tts-rt-v1

Soniox's first generally available TTS model (April 29, 2026), streaming speech in 60+ languages with accurate reading of phone numbers, emails and IDs. Deprecated by tts-rt-v2 and removed August 31, 2026, after which requests route to v2.

API
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "soniox/tts-rt-v1",
  "input": "Make every word count.",
  "voice": "auto",
  "response_format": "wav"
}' --output speech.wav
Input Price
$11.985 / 1M characters
Output Price
—
Input
Text
Output
Audio

Capabilities

Explore what tts-rt-v1 supports, then use the API section for a request tailored to this model.

BatchStreamPricing estimated

Model Information

Provider
Soniox
Product
Text-to-Speech
Release Date
Apr 29, 2026
Data Policy
Not specified
Region
US
Input
Text
Output
Audio
Provider Documentation

Playground

Try tts-rt-v1 by Soniox. Requests use the selected workspace’s credits and API pricing.

tts-rt-v1Credits —
tts-rt-v1
⌘ / Ctrl + Enter to send

Providers

Compare available endpoints, pricing, and context limits for tts-rt-v1.

ProviderContextOutputInput PriceOutput PriceEndpoint
SonioxNot specifiedAudio$11.985 / 1M characters—
soniox/tts-rt-v1:soniox

Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max chars600
Formatswav

Performance

Status

Current catalog availability. Your workspace’s access is checked separately before a request runs.

Getting Started

Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.

API
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
  -H "Authorization: Bearer $AUDIOLAB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "soniox/tts-rt-v1",
  "input": "Make every word count.",
  "voice": "auto",
  "response_format": "wav"
}' --output speech.wav
Read the Endpoint Reference

Request Parameters

Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.

ParameterDetails
modelsoniox/tts-rt-v1 — Required model identifier.

Input and Output Limits

Formats and limits AudioLab enforces on each request.

LimitValue
Max chars600
Formatswav

Similar Models

Explore more text-to-speech and compare their capabilities.

ModelContextInput PriceOutput Price
tts-rt-v2SonioxNot specified$11.985 / 1M characters—
tts-rt-v1-previewSonioxNot specified$11.985 / 1M characters—
Sonic 3.6CartesiaNot specified$38.25 / 1M characters—
Sonic 3.6 (2026-08-27)CartesiaNot specified$38.25 / 1M characters—
Inworld TTS-2 FlashInworld AINot specified$12.75 / 1M characters—
audio8DeepInfraNot specified$4.25 / 1M characters—
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