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.
Trusted by teams building global voice products
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
Translate before the sentence ends
Welsh meaning lands as French is spoken, not after the caption catches up.
Directional fr to cy streaming
Set the source and target codes once. Both arrive in a single labeled token stream.
High quality Welsh output
Same model across every language, including historically underserved ones.
Native-speaker French STT accuracy
Accurate Welsh translation starts with accurate French recognition across accents and language switching.
Names, numbers, and domain terms
Preserved across the pair, including phone numbers, emails, and IDs.
{
"model": "stt-rt-v5",
"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
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
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.
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.
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 1.25% word error rate and Welsh at 1.25% word error rate. Accurate recognition on both sides is what makes the translation reliable.
Speech-to-Text
Native-speaker accuracy across 60+ languages, with support for multilingual speech, alphanumerics, speaker diarization, context.
Translation
Real-time streaming translation across 3,600 language pairs, built for high quality and low delay across all supported languages.
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.
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.
Frequently asked questions
How do I translate French to Welsh with the API?
Is French to Welsh translation real-time?
What about translating Welsh to French?
Does Soniox handle French dialects and accents?
Which other providers support French to Welsh?
How fast is French to Welsh translation?
Simple, usage-based pricing
Translate live audio from French to Welsh from ~$0.18/hour.
Translation is already built into Soniox Speech-to-Text API. When turned on, it adds about ~$0.06/hour in output token costs.
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