Welsh to French speech-to-text translation API

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

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Production-ready Welsh to French translation API

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

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

Real-time Welsh to French translation

Soniox streams the Welsh transcript and the French translation on the same connection, word by word, so meaning lands while the speaker is still talking.

Live Transcription

WelshTranscript

FrenchTranslation

One-way translation

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

YouTube

Two-way Welsh and French conversation

Each side speaks naturally and hears the other in their own language. Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.

Live Conversation

Welsh

Welsh and French through a single stream

Set the source and target codes once. Transcript and translation arrive interleaved on one labeled token stream, with no extra round trip.

config.json

{
  "model": "stt-rt-v5",
  "translation": {
    "type": "one_way",
    "source_language": "cy",
    "target_language": "fr"
  }
}

A breakthrough in real-time Welsh to French translation

Translate before the sentence ends

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

Directional cy to fr streaming

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

Native-speaker Welsh STT accuracy

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

Names, numbers, and domain terms

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

Welsh to French translation is built on top of the Soniox Speech-to-Text API. Turn it on by adding a translation block to your request.

Explore the translation docs

Estimate your Welsh to French translation cost

Set your monthly audio volume to estimate your Soniox API cost for real-time speech-to-text translation.

Pricing calculator

Stop overpaying for Welsh speech AI

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1,000 hours of audio / month

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Pricing assumptions

Based on public pay-as-you-go pricing. Enterprise discounts and committed-use contracts may differ. Some providers charge separately for certain features. The calculator uses the public price for the provider configuration that most closely matches Soniox.

Translate Welsh to any language

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

Frequently asked questions

How do I translate Welsh to French with the API?

Add a translation block to your real-time request with source_language "cy" and target_language "fr". Soniox transcribes Welsh and streams the French translation over the same WebSocket.

Is Welsh to French translation real-time?

Yes. Soniox streams French while Welsh is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.

What about translating French to Welsh?

That direction is supported too. See the French to Welsh page, or use two-way translation to run both directions in one session.

Does Soniox handle Welsh dialects and accents?

Yes. Soniox handles Welsh dialects like North Welsh (Gogledd) and South Welsh (De) in a single model, so French translation stays accurate across regions.

Which other providers support Welsh to French?

Based on their public docs, OpenAI, Google, and Azure list both Welsh and French for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.

How fast is Welsh to French translation?

Soniox streams French as Welsh is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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Documentation

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