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Serbian to Bulgarian speech translation API

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

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Production-ready Serbian to Bulgarian translation API

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

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

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

A breakthrough in real-time Serbian to Bulgarian translation

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Translate before the sentence ends

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

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Directional sr to bg streaming

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

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High quality Bulgarian output

Same model across every language, including historically underserved ones.

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Native-speaker Serbian STT accuracy

Accurate Bulgarian translation starts with accurate Serbian 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": "sr",
    "target_language": "bg"
  }
}

Serbian and Bulgarian through a single stream

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

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

Live Serbian to Bulgarian: written and spoken

Serbian to Bulgarian speech-to-text

micLive Serbian speecharrow_right_altsubjectBulgarian text

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

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

Serbian to Bulgarian speech-to-speech

micLive Serbian speecharrow_right_altvolume_upSpoken Bulgarian

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

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

Live Serbian to Bulgarian translation in action

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

voice_selection
Serbian speaker says: “Posle meeting-a ti forwardujem onaj email.”
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Translated into Bulgarian in real time.

One-way translation

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

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

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

Two-way translation

Translate between Serbian and Bulgarian 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 Serbian at 8.1% word error rate and Bulgarian at 5.6% 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 Serbian and Bulgarian

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

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

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

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

Translate Serbian to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Bulgarian to Serbianarrow_right_alttranslateSerbian speech translationarrow_right_alttranslateBulgarian speech translationarrow_right_altarrow_right_altSerbian to Croatianarrow_right_altarrow_right_altSerbian to Bosnianarrow_right_altarrow_right_altSerbian to Slovenianarrow_right_alt

Frequently asked questions

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

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