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Thai to Spanish speech translation API

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

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Production-ready Thai to Spanish translation API

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

Thai (Kra-Dai > Tai) and Spanish (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.

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

A breakthrough in real-time Thai to Spanish translation

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Translate before the sentence ends

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

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Directional th to es streaming

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

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High quality Spanish output

Same model across every language, including historically underserved ones.

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Native-speaker Thai STT accuracy

Accurate Spanish translation starts with accurate Thai 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": "th",
    "target_language": "es"
  }
}

Thai and Spanish through a single stream

Thai to Spanish translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and Spanish 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: "es". It runs on the same WebSocket and the same model, with no extra round trip.

Live Thai to Spanish: written and spoken

Thai to Spanish speech-to-text

micLive Thai speecharrow_right_altsubjectSpanish text

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

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

Thai to Spanish speech-to-speech

micLive Thai speecharrow_right_altvolume_upSpoken Spanish

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

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

Live Thai to Spanish translation in action

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

voice_selection
Thai speaker says: “ขออเมริกาโน่เย็น หวานน้อย ใส่แก้ว to-go นะ.”
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Translated into Spanish in real time.

One-way translation

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

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

voice_selection
Thai speaker talks in Thai.
hearing
Spanish speaker hears Spanish.
voice_selection
Spanish speaker replies in Spanish.
hearing
Thai speaker hears Thai.

Two-way translation

Translate between Thai and Spanish 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 9.5% word error rate and Spanish at 5.3% 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 Thai and Spanish

Thai has roughly 70,000,000 speakers across Thailand, Laos, Myanmar, and Cambodia. Spanish has roughly 500,000,000 speakers across Spain, Mexico, Colombia, and Argentina.

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

Spanish is the second most spoken language in the world by native speakers, after Mandarin Chinese.

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

Translate Thai to any language

From Thai to Spanish, or Thai to any of 60+ supported languages. All real-time.

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Spanish to Thaiarrow_right_alttranslateThai speech translationarrow_right_alttranslateSpanish speech translationarrow_right_alt

Frequently asked questions

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

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