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Greek to Bulgarian speech translation API

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

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Production-ready Greek to Bulgarian translation API

Real Greek 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.

Greek (Indo-European > Hellenic) and Bulgarian (Indo-European > Slavic > South Slavic) come from different language families, so word order and morphology differ. Soniox reorders meaning in-stream instead of word by word.

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

A breakthrough in real-time Greek to Bulgarian translation

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Translate before the sentence ends

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

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Directional el 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 Greek STT accuracy

Accurate Bulgarian translation starts with accurate Greek 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": "el",
    "target_language": "bg"
  }
}

Greek and Bulgarian through a single stream

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

Live Greek to Bulgarian: written and spoken

Greek to Bulgarian speech-to-text

micLive Greek speecharrow_right_altsubjectBulgarian text

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

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

Greek to Bulgarian speech-to-speech

micLive Greek speecharrow_right_altvolume_upSpoken Bulgarian

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

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

Live Greek to Bulgarian translation in action

Stream Greek 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
Greek speaker says: “Έκλεισα ήδη τα ferry tickets online για την Αίγινα, αλλά άκουσα για πιθανό strike.”
translate
Translated into Bulgarian in real time.

One-way translation

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

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

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

Two-way translation

Translate between Greek 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 Greek at 7.4% 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.

quiz
About Greek and Bulgarian

Greek has roughly 13,500,000 speakers across Greece and Cyprus. Bulgarian has roughly 8,000,000 speakers across Bulgaria.

Greek has the longest documented history of any Indo-European language, spanning over 3,400 years.

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

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

Translate Greek to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate Bulgarian to Greekarrow_right_alttranslateGreek speech translationarrow_right_alttranslateBulgarian speech translationarrow_right_alt

Frequently asked questions

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

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