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Bulgarian to Spanish speech translation API

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

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Production-ready Bulgarian to Spanish translation API

Real Bulgarian 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.

Bulgarian (Indo-European > Slavic > South Slavic) 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.

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

A breakthrough in real-time Bulgarian to Spanish translation

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Translate before the sentence ends

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

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Directional bg 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 Bulgarian STT accuracy

Accurate Spanish translation starts with accurate Bulgarian 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": "bg",
    "target_language": "es"
  }
}

Bulgarian and Spanish through a single stream

Bulgarian 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: "bg" and target_language: "es". It runs on the same WebSocket and the same model, with no extra round trip.

Live Bulgarian to Spanish: written and spoken

Bulgarian to Spanish speech-to-text

micLive Bulgarian speecharrow_right_altsubjectSpanish text

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

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

Bulgarian to Spanish speech-to-speech

micLive Bulgarian speecharrow_right_altvolume_upSpoken Spanish

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

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

Live Bulgarian to Spanish translation in action

Stream Bulgarian 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
Bulgarian speaker says: “Имам deadline в три, така че ми трябва стабилно Wi‑Fi.”
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Translated into Spanish in real time.

One-way translation

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

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

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

Two-way translation

Translate between Bulgarian 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 Bulgarian at 5.6% 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 Bulgarian and Spanish

Bulgarian has roughly 8,000,000 speakers across Bulgaria. Spanish has roughly 500,000,000 speakers across Spain, Mexico, Colombia, and Argentina.

The Cyrillic alphabet was developed in the First Bulgarian Empire in the 9th century.

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

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

Translate Bulgarian to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Spanish to Bulgarianarrow_right_alttranslateBulgarian speech translationarrow_right_alttranslateSpanish speech translationarrow_right_altarrow_right_altBulgarian to Macedonianarrow_right_altarrow_right_altBulgarian to Serbianarrow_right_alt

Frequently asked questions

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

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