Get the AppBuild with API

Bulgarian to French speech translation API

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

Trusted by

Production-ready Bulgarian to French translation API

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

Bulgarian (Indo-European > Slavic > South Slavic) and French (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 French in Latin, so Soniox emits correctly scripted French text.

A breakthrough in real-time Bulgarian to French translation

check

Translate before the sentence ends

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

check

Directional bg to fr streaming

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

check

High quality French output

Same model across every language, including historically underserved ones.

check

Native-speaker Bulgarian STT accuracy

Accurate French translation starts with accurate Bulgarian recognition across accents and language switching.

check

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": "fr"
  }
}

Bulgarian and French through a single stream

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

Live Bulgarian to French: written and spoken

Bulgarian to French speech-to-text

micLive Bulgarian speecharrow_right_altsubjectFrench text

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

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

Bulgarian to French speech-to-speech

micLive Bulgarian speecharrow_right_altvolume_upSpoken French

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

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

Live Bulgarian to French translation in action

Stream Bulgarian to French one-way to push all speech into French, 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 French in real time.

One-way translation

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

Two-way translation

Translate between Bulgarian and French 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 French at 5.7% 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 French

Bulgarian has roughly 8,000,000 speakers across Bulgaria. French has roughly 280,000,000 speakers across France, Democratic Republic of Congo, Canada, and Madagascar.

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

French was the international language of diplomacy and high culture from the 17th to the mid-20th century.

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

Translate Bulgarian to any language

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

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnameseWelsh

Related translation pages

swap_horizTranslate French to Bulgarianarrow_right_alttranslateBulgarian speech translationarrow_right_alttranslateFrench 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 French with the API?arrow_downward
Add a translation block to your real-time request with source_language "bg" and target_language "fr". Soniox transcribes Bulgarian and streams the French translation over the same WebSocket.
Is Bulgarian to French translation real-time?arrow_downward
Yes. Soniox streams French while Bulgarian is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating French to Bulgarian?arrow_downward
That direction is supported too. See the French 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 French 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 French translation stays accurate across regions.
Which other providers support Bulgarian to French?arrow_downward
Based on their public docs, OpenAI, Azure, and Speechmatics list both Bulgarian and French for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is Bulgarian to French translation?arrow_downward
Soniox streams French as Bulgarian is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

Ready to get started?

Create an account instantly, or contact us to design a custom package for your business.

Build with API arrow_right_alt

Documentation

Get up and running in minutes and spend your time building the product, not wrestling with the API.

Explore docs

See what you’ll pay

Pay only for what you use with our flexible pricing. Built to scale with you.

Pricing details