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Welsh to Czech speech translation API

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

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Production-ready Welsh to Czech translation API

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

Welsh (Indo-European > Celtic > Brittonic) and Czech (Indo-European > Slavic > West Slavic) 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 Welsh to Czech translation

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Translate before the sentence ends

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

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Directional cy to cs streaming

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

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High quality Czech output

Same model across every language, including historically underserved ones.

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Native-speaker Welsh STT accuracy

Accurate Czech translation starts with accurate Welsh 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": "cy",
    "target_language": "cs"
  }
}

Welsh and Czech through a single stream

Welsh to Czech translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and Czech translation streams mid-sentence in the same labeled token stream.

Turn it on by adding a translation block with source_language: "cy" and target_language: "cs". It runs on the same WebSocket and the same model, with no extra round trip.

Live Welsh to Czech: written and spoken

Welsh to Czech speech-to-text

micLive Welsh speecharrow_right_altsubjectCzech text

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

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

Welsh to Czech speech-to-speech

micLive Welsh speecharrow_right_altvolume_upSpoken Czech

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

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

Live Welsh to Czech translation in action

Stream Welsh to Czech one-way to push all speech into Czech, or two-way to keep a bilingual conversation flowing between the two languages.

voice_selection
Welsh speaker says: “Ie, a falle cawn ni bara brith yn y half-time, os nad yw'r siop yn out of stock.”
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Translated into Czech in real time.

One-way translation

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

Ideal for live captions, multilingual meetings, broadcasts, lectures, and customer calls.

voice_selection
Welsh speaker talks in Welsh.
hearing
Czech speaker hears Czech.
voice_selection
Czech speaker replies in Czech.
hearing
Welsh speaker hears Welsh.

Two-way translation

Translate between Welsh and Czech 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 Welsh at 14.3% word error rate and Czech at 9.7% 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 Welsh and Czech

Welsh has roughly 900,000 speakers across United Kingdom. Czech has roughly 10,500,000 speakers across Czech Republic.

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

Czech uses a diacritical orthography system introduced by Jan Hus in the early 15th century.

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

Translate Welsh to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnamese

Related translation pages

swap_horizTranslate Czech to Welsharrow_right_alttranslateWelsh speech translationarrow_right_alttranslateCzech speech translationarrow_right_alt

Frequently asked questions

How do I translate Welsh to Czech with the API?arrow_downward
Add a translation block to your real-time request with source_language "cy" and target_language "cs". Soniox transcribes Welsh and streams the Czech translation over the same WebSocket.
Is Welsh to Czech translation real-time?arrow_downward
Yes. Soniox streams Czech while Welsh is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating Czech to Welsh?arrow_downward
That direction is supported too. See the Czech to Welsh page, or use two-way translation to run both directions in one session.
Does Soniox handle Welsh dialects and accents?arrow_downward
Yes. Soniox handles Welsh dialects like North Welsh (Gogledd) and South Welsh (De) in a single model, so Czech translation stays accurate across regions.
Which other providers support Welsh to Czech?arrow_downward
Based on their public docs, OpenAI and Azure list both Welsh and Czech for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is Welsh to Czech translation?arrow_downward
Soniox streams Czech as Welsh is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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