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Czech to Slovak speech translation API

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

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Production-ready Czech to Slovak translation API

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

Czech and Slovak both belong to the Indo-European > Slavic > West Slavic family, so cognates and shared structure carry over cleanly into the translated Slovak output.

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

A breakthrough in real-time Czech to Slovak translation

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Translate before the sentence ends

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

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Directional cs to sk streaming

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

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High quality Slovak output

Same model across every language, including historically underserved ones.

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Native-speaker Czech STT accuracy

Accurate Slovak translation starts with accurate Czech 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": "cs",
    "target_language": "sk"
  }
}

Czech and Slovak through a single stream

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

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

Live Czech to Slovak: written and spoken

Czech to Slovak speech-to-text

micLive Czech speecharrow_right_altsubjectSlovak text

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

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

Czech to Slovak speech-to-speech

micLive Czech speecharrow_right_altvolume_upSpoken Slovak

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

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

Live Czech to Slovak translation in action

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

voice_selection
Czech speaker says: “Chci zaplatit contactless.”
translate
Translated into Slovak in real time.

One-way translation

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

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

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

Two-way translation

Translate between Czech and Slovak 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 Czech at 9.7% word error rate and Slovak at 8.5% 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 Czech and Slovak

Czech has roughly 10,500,000 speakers across Czech Republic. Slovak has roughly 5,400,000 speakers across Slovakia.

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

Slovak and Czech are mutually intelligible, and speakers of both languages can generally understand each other.

Czech and Slovak are closely related languages, which helps Soniox keep tone and meaning consistent across the pair.

Translate Czech to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Slovak to Czecharrow_right_alttranslateCzech speech translationarrow_right_alttranslateSlovak speech translationarrow_right_altarrow_right_altCzech to Polisharrow_right_alt

Frequently asked questions

How do I translate Czech to Slovak with the API?arrow_downward
Add a translation block to your real-time request with source_language "cs" and target_language "sk". Soniox transcribes Czech and streams the Slovak translation over the same WebSocket.
Is Czech to Slovak translation real-time?arrow_downward
Yes. Soniox streams Slovak while Czech is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating Slovak to Czech?arrow_downward
That direction is supported too. See the Slovak to Czech page, or use two-way translation to run both directions in one session.
Czech and Slovak are both Indo-European > Slavic > West Slavic — does that affect quality?arrow_downward
Shared family structure and cognates generally help. Soniox uses the same model for every pair, so quality stays consistent whether the languages are closely related or not.
Does Soniox handle Czech dialects and accents?arrow_downward
Yes. Soniox handles Czech dialects like Bohemian, Moravian, and Silesian in a single model, so Slovak translation stays accurate across regions.
Which other providers support Czech to Slovak?arrow_downward
Based on their public docs, OpenAI, Azure, and Speechmatics list both Czech and Slovak for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is Czech to Slovak translation?arrow_downward
Soniox streams Slovak as Czech is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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