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Live French speech translation API

Translate French speech to and from 60+ languages in real time. Low-latency streaming, 3,600 language pairs, and accurate translation for voice agents, live captioning, and multilingual apps.

Production-ready French speech translation API

Real conversations in French include accents, regional dialects, code switching, and domain-specific vocabulary. Soniox is built to handle that variation in a single model, so live translation stays usable across regions and registers.

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

French belongs to the Indo-European > Romance > Western Romance family. Soniox translates between French and related languages, as well as any of 60+ supported targets and 3,600 language pairs in total.

A breakthrough in real-time French translation

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Translate French before the sentence ends

Meaning lands as it's spoken, not after the caption catches up.

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French paired with 60+ languages

Both source and target. 3,600 pairs total, not English-centric.

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High quality French output

Same model across every language, including historically underserved ones.

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Native-speaker French STT accuracy

Accurate translation starts with accurate recognition across accents, multilingual speech, and language switching.

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French names, numbers, and domain terms

Preserved in both transcript and translation, including phone numbers, emails, and IDs.

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

Transcription + translation through a single stream

French translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and translation streams mid-sentence and both arrive together in a single labeled token stream.

Turn it on by adding a translation block to your request. Translation runs on the same WebSocket and the same model. Translated tokens come back interleaved with transcripts, with no extra round trip.

Live French translation: written and spoken

French speech-to-text translation

micLive French speecharrow_right_altsubjectTranscript + translation

Translate live French into written text with the Soniox STT API. Enable real-time translation with a config change. Soniox streams the French transcript and translated text as speech happens.

Use it for French captions, subtitles, meeting translation, agent assist, accessibility tools, and multilingual transcription.

French speech-to-speech translation

micLive French speecharrow_right_altvolume_upTranslated speech

Build full spoken French translation by combining Soniox STT and Soniox TTS. Soniox recognizes French, translates it in real time, and speaks the output in the target language with low latency.

Use it for live French interpreters, bilingual voice agents, travel assistants, customer support, and real-time multilingual communication.

Live French translation for captions, conversations and more

Stream live French translation in two modes: one-way translates all speech into a single target language, two-way keeps a bilingual conversation flowing between French and another language.

voice_selection
French speaker says: “Tu bosses remote demain ou tu viens au bureau pour le big meeting?”
translate
Speech is translated into English (or any of 60+ target languages) in real time.

One-way translation

Translate live speech to or from French into a single target language. Everyone in the conversation sees the same translated stream.

Ideal for live captions, multilingual meetings, broadcasts, lectures, customer calls, and products where many speakers need to be understood in one language.

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

Two-way translation

Translate between French and another language 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.

Built on the Soniox speech AI platform

French translation is powered by the same infrastructure behind Soniox STT and TTS.

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

French has roughly 280,000,000 speakers across France, Democratic Republic of Congo, Canada, Madagascar, Cameroon, and Ivory Coast, and 23 more regions.

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

French liaison connects a final consonant to the next word's initial vowel in continuous speech.

Translate between all languages

From French to any supported language, or any supported language to French. 3,600 language pairs, all real-time.

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Frequently asked questions

Does Soniox translate French in real time?arrow_downward
Yes. Soniox streams French translation while speech is still happening, so users see or hear meaning immediately instead of waiting for the sentence to end.
What language pairs are supported for French?arrow_downward
Soniox supports translation between French and any of 60+ supported languages — 3,600 language pairs in total. Both French as the source and French as the target are supported.
How does two-way French translation work?arrow_downward
Two-way translation lets both sides of a conversation speak in their own language and hear the other side in theirs. A French speaker can talk in French while the other party hears their own language in real time, and vice versa.
Does Soniox handle dialects and accents in French?arrow_downward
Yes. Soniox handles French dialects like Metropolitan French, Canadian French, and Belgian French in a single model, along with accents and language switching, so live translation stays accurate across regions and registers.
Can Soniox translate names, numbers, and domain terms in French?arrow_downward
Yes. Soniox preserves the details that matter — names, phone numbers, emails, IDs, addresses, verification codes, and domain-specific terminology — in both the French transcript and the translated output.
Which other providers support live French translation?arrow_downward
Based on their public docs, OpenAI, Google, Azure, and Speechmatics list French as a supported source language for real-time translation. Soniox is the only one of them that also supports two-way live translation across 60+ languages.
How fast is French translation?arrow_downward
Soniox streams translated text as French is being spoken, with ultra-low latency. Translation arrives before the sentence ends, rather than after long caption delays.
What can I build with French translation?arrow_downward
Common use cases include multilingual voice agents, live interpreters, multilingual meetings, customer support and contact centers, real-time translated captions and subtitles, and accessibility and communication tools — all with French as a source or target.

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