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French to Welsh speech translation API

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

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Production-ready French to Welsh translation API

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

French (Indo-European > Romance > Western Romance) and Welsh (Indo-European > Celtic > Brittonic) 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 Welsh translation

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Translate before the sentence ends

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

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Directional fr to cy streaming

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

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High quality Welsh output

Same model across every language, including historically underserved ones.

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Native-speaker French STT accuracy

Accurate Welsh 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": "cy"
  }
}

French and Welsh through a single stream

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

Live French to Welsh: written and spoken

French to Welsh speech-to-text

micLive French speecharrow_right_altsubjectWelsh text

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

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

French to Welsh speech-to-speech

micLive French speecharrow_right_altvolume_upSpoken Welsh

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

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

Live French to Welsh translation in action

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

One-way translation

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

Two-way translation

Translate between French and Welsh 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 Welsh at 14.3% 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 Welsh

French has roughly 280,000,000 speakers across France, Democratic Republic of Congo, Canada, and Madagascar. Welsh has roughly 900,000 speakers across United Kingdom.

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

Welsh is one of the oldest living languages in Europe and the most widely spoken Celtic language today.

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

Translate French to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

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

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