New: Soniox v5 Real-Time is here

Thai to Czech speech translation API

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

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Production-ready Thai to Czech translation API

Real Thai 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.

Thai (Kra-Dai > Tai) 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.

Thai is written in Thai and Czech in Latin, so Soniox emits correctly scripted Czech text.

A breakthrough in real-time Thai to Czech translation

Translate before the sentence ends

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

Directional th to cs streaming

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

High quality Czech output

Same model across every language, including historically underserved ones.

Native-speaker Thai STT accuracy

Accurate Czech translation starts with accurate Thai recognition across accents and language switching.

Names, numbers, and domain terms

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

config.json
{
  "model": "stt-rt-v5",
  "translation": {
    "type": "one_way",
    "source_language": "th",
    "target_language": "cs"
  }
}

Thai and Czech through a single stream

Thai 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: "th" and target_language: "cs". It runs on the same WebSocket and the same model, with no extra round trip.

Live Thai to Czech: written and spoken

Thai to Czech speech-to-text

Live Thai speechCzech text

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

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

Thai to Czech speech-to-speech

Live Thai speechSpoken Czech

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

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

Live Thai to Czech translation in action

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

Thai speaker says: ขออเมริกาโน่เย็น หวานน้อย ใส่แก้ว to-go นะ.
Translated into Czech in real time.

One-way translation

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

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

Thai speaker talks in Thai.
Czech speaker hears Czech.
Czech speaker replies in Czech.
Thai speaker hears Thai.

Two-way translation

Translate between Thai 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 Thai at 1.25% word error rate and Czech 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 Thai and Czech

Thai has roughly 70,000,000 speakers across Thailand, Laos, Myanmar, and Cambodia. Czech has roughly 10,500,000 speakers across Czech Republic.

The Thai script was created in 1283 by King Ramkhamhaeng the Great, adapted from Khmer script.

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

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

Frequently asked questions

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

Simple, usage-based pricing

Translate live audio from Thai to Czech 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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