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Bulgarian to Serbian speech translation API

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

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Production-ready Bulgarian to Serbian translation API

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

Bulgarian and Serbian both belong to the Indo-European > Slavic > South Slavic family, so cognates and shared structure carry over cleanly into the translated Serbian output.

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

A breakthrough in real-time Bulgarian to Serbian translation

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Translate before the sentence ends

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

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Directional bg to sr streaming

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

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High quality Serbian output

Same model across every language, including historically underserved ones.

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Native-speaker Bulgarian STT accuracy

Accurate Serbian 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": "sr"
  }
}

Bulgarian and Serbian through a single stream

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

Live Bulgarian to Serbian: written and spoken

Bulgarian to Serbian speech-to-text

micLive Bulgarian speecharrow_right_altsubjectSerbian text

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

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

Bulgarian to Serbian speech-to-speech

micLive Bulgarian speecharrow_right_altvolume_upSpoken Serbian

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

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

Live Bulgarian to Serbian translation in action

Stream Bulgarian to Serbian one-way to push all speech into Serbian, 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.”
translate
Translated into Serbian in real time.

One-way translation

Translate live Bulgarian into Serbian. 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
Serbian speaker hears Serbian.
voice_selection
Serbian speaker replies in Serbian.
hearing
Bulgarian speaker hears Bulgarian.

Two-way translation

Translate between Bulgarian and Serbian 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 Serbian at 8.1% 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.

quiz
About Bulgarian and Serbian

Bulgarian has roughly 8,000,000 speakers across Bulgaria. Serbian has roughly 12,000,000 speakers across Serbia, Bosnia and Herzegovina, and Montenegro.

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

Serbian is one of the few European languages officially written in two scripts: Cyrillic and Latin.

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

Translate Bulgarian to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Serbian to Bulgarianarrow_right_alttranslateBulgarian speech translationarrow_right_alttranslateSerbian speech translationarrow_right_altarrow_right_altBulgarian to Macedonianarrow_right_alt

Frequently asked questions

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

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