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French to Dutch speech translation API

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

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Production-ready French to Dutch translation API

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

French (Indo-European > Romance > Western Romance) and Dutch (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 Dutch translation

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Translate before the sentence ends

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

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Directional fr to nl streaming

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

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High quality Dutch output

Same model across every language, including historically underserved ones.

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Native-speaker French STT accuracy

Accurate Dutch 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": "nl"
  }
}

French and Dutch through a single stream

French to Dutch translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and Dutch 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: "nl". It runs on the same WebSocket and the same model, with no extra round trip.

Live French to Dutch: written and spoken

French to Dutch speech-to-text

micLive French speecharrow_right_altsubjectDutch text

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

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

French to Dutch speech-to-speech

micLive French speecharrow_right_altvolume_upSpoken Dutch

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

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

Live French to Dutch translation in action

Stream French to Dutch one-way to push all speech into Dutch, 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 Dutch in real time.

One-way translation

Translate live French into Dutch. 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
Dutch speaker hears Dutch.
voice_selection
Dutch speaker replies in Dutch.
hearing
French speaker hears French.

Two-way translation

Translate between French and Dutch 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 Dutch at 9.4% 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.

quiz
About French and Dutch

French has roughly 280,000,000 speakers across France, Democratic Republic of Congo, Canada, and Madagascar. Dutch has roughly 24,000,000 speakers across Netherlands, Belgium, and Suriname.

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

Dutch was the language of colonial administration in Indonesia, South Africa, and parts of the Caribbean.

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

Translate French to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Dutch to Frencharrow_right_alttranslateFrench speech translationarrow_right_alttranslateDutch 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 Dutch with the API?arrow_downward
Add a translation block to your real-time request with source_language "fr" and target_language "nl". Soniox transcribes French and streams the Dutch translation over the same WebSocket.
Is French to Dutch translation real-time?arrow_downward
Yes. Soniox streams Dutch while French is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating Dutch to French?arrow_downward
That direction is supported too. See the Dutch 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 Dutch translation stays accurate across regions.
Which other providers support French to Dutch?arrow_downward
Based on their public docs, OpenAI, Google, Azure, and Speechmatics list both French and Dutch for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is French to Dutch translation?arrow_downward
Soniox streams Dutch as French is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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