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Soniox Speech Translation API

API service

by Soniox

Real-time speech translation API that translates speech one way into a target language, or both ways in a conversation, while people are still speaking, across 60+ languages, for voice agents, live captions and multilingual meetings.

Find alternatives to Soniox Speech Translation API

What it does

• Translation
• Speech to text

Sources

Pricing

Official documentation · 18 Oct 2026

"$0.16/hour async · $0.18/hour real-time" on the page; the pricing page bills translation inside the Speech-to-Text API's token meter, so usage-based is recorded.

Description

Official documentation · 18 Oct 2026

"Speech-to-text translation API for voice agents, live captions, and multilingual meetings. Translate one way into a target language, or both ways in a conversation, while people are still speaking."

What it does

Official documentation · 18 Oct 2026

"Translate naturally across 60+ languages, including languages that have historically been poorly supported by speech translation systems."

Sold within

Pricing page · 18 Oct 2026

The pricing page lists translation as optional output of the Speech-to-Text API's tokens ("Transcription and optionally translation or other text returned by the model"), so it comes with that API's meter rather than a separate plan.

Name

Official documentation · 18 Oct 2026

"Real-time speech translation API"; menu entry "Speech Translation API".

URL

Official documentation · 18 Oct 2026

The product's own page, linked from the API menu as Speech Translation API.

Deployment

Official documentation · 18 Oct 2026

A hosted API: "through one unified API" with "Soniox Data Residency" regions; no self-hosted option is described.

Interfaces

Official documentation · 18 Oct 2026

"Build with API" and "Explore docs"; one API serves speech-to-text, text-to-speech and translation.

Also from Soniox

• Soniox Speech-to-Text API API service

  Speech-to-text API (stt-rt-v5) for real-time and file transcription and speech translation, priced by tokens of audio.

• Soniox App Application

  Soniox App records, transcribes and translates audio.

• Smart Scribe Application

  Smart Scribe records audio and produces real-time transcriptions.

• Soniox Text-to-Speech API API service

  Soniox Text-to-Speech API generates audio from text through a REST endpoint.

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