English to German speech-to-text translation API

Stream English (English) speech and get German (Deutsch) back in real time. One WebSocket, ISO codes en to de, and ultra-low latency for voice agents and live apps.

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Production-ready English to German translation API

Real English speech includes accents, regional dialects, code switching, and domain-specific vocabulary. Soniox recognizes it in a single model and streams German while the speaker is still talking.

English and German both belong to the Indo-European > Germanic > West Germanic family, so cognates and shared structure carry over cleanly into the translated German output.

Soniox preserves formatting in the translated transcript, including names, numbers, addresses, IDs, and domain-specific terms.

Real-time English to German translation

Soniox streams the English transcript and the German translation on the same connection, word by word, so meaning lands while the speaker is still talking.

Live Transcription

EnglishTranscript

GermanTranslation

One-way translation

Translate live English into German. Everyone in the conversation sees the same translated stream.

YouTube

Two-way English and German conversation

Each side speaks naturally and hears the other in their own language. Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.

Live Conversation

English

English and German through a single stream

Set the source and target codes once. Transcript and translation arrive interleaved on one labeled token stream, with no extra round trip.

config.json

{
  "model": "stt-rt-v5",
  "translation": {
    "type": "one_way",
    "source_language": "en",
    "target_language": "de"
  }
}

A breakthrough in real-time English to German translation

Translate before the sentence ends

German meaning lands as English is spoken, not after the caption catches up.

Directional en to de streaming

Set the source and target codes once. Both arrive in a single labeled token stream.

Native-speaker English STT accuracy

Accurate German translation starts with accurate English recognition across accents and language switching.

Names, numbers, and domain terms

Preserved across the pair, including phone numbers, emails, and IDs.

English to German translation is built on top of the Soniox Speech-to-Text API. Turn it on by adding a translation block to your request.

Explore the translation docs

Estimate your English to German translation cost

Set your monthly audio volume to estimate your Soniox API cost for real-time speech-to-text translation.

Pricing calculator

Stop overpaying for English speech AI

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1,000 hours of audio / month

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Pricing assumptions

Based on public pay-as-you-go pricing. Enterprise discounts and committed-use contracts may differ. Some providers charge separately for certain features. The calculator uses the public price for the provider configuration that most closely matches Soniox.

Translate English to any language

From English to German, or English to any of 60+ supported languages. All real-time.

Frequently asked questions

How do I translate English to German with the API?

Add a translation block to your real-time request with source_language "en" and target_language "de". Soniox transcribes English and streams the German translation over the same WebSocket.

Is English to German translation real-time?

Yes. Soniox streams German while English is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.

What about translating German to English?

That direction is supported too. See the German to English page, or use two-way translation to run both directions in one session.

English and German are both Indo-European > Germanic > West Germanic — does that affect quality?

Shared family structure and cognates generally help. Soniox uses the same model for every pair, so quality stays consistent whether the languages are closely related or not.

Does Soniox handle English dialects and accents?

Yes. Soniox handles English dialects like American English, British English, and Australian English in a single model, so German translation stays accurate across regions.

Which other providers support English to German?

Based on their public docs, OpenAI, Google, Azure, and Speechmatics list both English and German for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.

How fast is English to German translation?

Soniox streams German as English is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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Documentation

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See what you’ll pay

Pay only for what you use with our flexible pricing. Built to scale with you.

Pricing details