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Overview

SonioxSTTService provides real-time speech-to-text transcription using Soniox’s WebSocket API with support for over 60 languages, custom context, multiple languages in the same conversation, and advanced features for accurate multilingual transcription. By default, Soniox uses the stt-rt-v4 model with vad_force_turn_endpoint=True, which disables Soniox’s native turn detection and relies on Pipecat’s local VAD to finalize transcripts. This configuration significantly reduces the time to final segment (~250ms median). Pipecat enables smart-turn detection by default using LocalSmartTurnAnalyzerV3. To use Soniox’s native turn detection instead, set vad_force_turn_endpoint=False.

Soniox STT API Reference

Pipecat’s API methods for Soniox STT integration

Example Implementation

Complete example with interruption handling

Soniox Documentation

Official Soniox documentation and features

Soniox Console

Access multilingual models and API keys

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Installation

To use Soniox services, install the required dependencies: 
pip install "pipecat-ai[soniox]"

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Prerequisites

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Soniox Account Setup

Before using Soniox STT services, you need:
  1. Soniox Account: Sign up at Soniox Console
  2. API Key: Generate an API key from your console dashboard
  3. Language Selection: Choose from 60+ supported languages and models

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Required Environment Variables

  • SONIOX_API_KEY: Your Soniox API key for authentication