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French to German speech translation API

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

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Production-ready French to German translation API

Real French 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.

French (Indo-European > Romance > Western Romance) and German (Indo-European > Germanic > West Germanic) come from different language families, so word order and morphology differ. Soniox reorders meaning in-stream instead of word by word.

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

A breakthrough in real-time French to German translation

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Translate before the sentence ends

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

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Directional fr to de streaming

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

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High quality German output

Same model across every language, including historically underserved ones.

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Native-speaker French STT accuracy

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

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Names, numbers, and domain terms

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

config.json
{
  "model": "stt-rt-v4",
  "translation": {
    "type": "one_way",
    "source_language": "fr",
    "target_language": "de"
  }
}

French and German through a single stream

French to German translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and German translation streams mid-sentence in the same labeled token stream.

Turn it on by adding a translation block with source_language: "fr" and target_language: "de". It runs on the same WebSocket and the same model, with no extra round trip.

Live French to German: written and spoken

French to German speech-to-text

micLive French speecharrow_right_altsubjectGerman text

Translate live French into written German with the Soniox STT API. Soniox streams the French transcript and the German translation as speech happens.

Use it for German captions, subtitles, meeting translation, agent assist, and multilingual transcription.

French to German speech-to-speech

micLive French speecharrow_right_altvolume_upSpoken German

Build full spoken French to German translation by combining Soniox STT and Soniox TTS. Soniox recognizes French, translates it, and speaks German with low latency.

Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.

Live French to German translation in action

Stream French to German one-way to push all speech into German, or two-way to keep a bilingual conversation flowing between the two languages.

voice_selection
French speaker says: “Tu bosses remote demain ou tu viens au bureau pour le big meeting?”
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Translated into German in real time.

One-way translation

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

Ideal for live captions, multilingual meetings, broadcasts, lectures, and customer calls.

voice_selection
French speaker talks in French.
hearing
German speaker hears German.
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German speaker replies in German.
hearing
French speaker hears French.

Two-way translation

Translate between French and German for live bilingual conversation. Each side speaks naturally and hears the other in their own language.

Soniox supports real-time two-way translation between any two of 60+ supported languages.

Accurate on both ends of the pair

Soniox transcribes French at 5.7% word error rate and German at 7% word error rate. Accurate recognition on both sides is what makes the translation reliable.

speech_to_text

Speech-to-Text

Native-speaker accuracy across 60+ languages, with support for multilingual speech, alphanumerics, speaker diarization, context.

translate

Translation

Real-time streaming translation across 3,600 language pairs, built for high quality and low delay across all supported languages.

text_to_speech

Text-to-speech

High-fidelity speech generation in 60+ languages, built for names, alphanumerics, language switching, and ultra-low-latency streaming.

Together, they create a complete real-time low-latency speech AI platform.

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About French and German

French has roughly 280,000,000 speakers across France, Democratic Republic of Congo, Canada, and Madagascar. German has roughly 100,000,000 speakers across Germany, Austria, Switzerland, and Luxembourg.

French was the international language of diplomacy and high culture from the 17th to the mid-20th century.

Martin Luther's 1534 Bible translation was a landmark in standardizing the German language.

Soniox makes French to German usable in real-time translation across every supported pair.

Translate French to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate German to Frencharrow_right_alttranslateFrench speech translationarrow_right_alttranslateGerman speech translationarrow_right_altarrow_right_altFrench to Spanisharrow_right_altarrow_right_altFrench to Italianarrow_right_altarrow_right_altFrench to Portuguesearrow_right_alt

Frequently asked questions

How do I translate French to German with the API?arrow_downward
Add a translation block to your real-time request with source_language "fr" and target_language "de". Soniox transcribes French and streams the German translation over the same WebSocket.
Is French to German translation real-time?arrow_downward
Yes. Soniox streams German while French is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating German to French?arrow_downward
That direction is supported too. See the German to French page, or use two-way translation to run both directions in one session.
Does Soniox handle French dialects and accents?arrow_downward
Yes. Soniox handles French dialects like Metropolitan French, Canadian French, and Belgian French in a single model, so German translation stays accurate across regions.
Which other providers support French to German?arrow_downward
Based on their public docs, OpenAI, Google, Azure, and Speechmatics list both French and German for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is French to German translation?arrow_downward
Soniox streams German as French is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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