Bulgarian to Spanish speech-to-text 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.

Real-time Bulgarian to Spanish translation

Soniox streams the Bulgarian transcript and the Spanish translation on the same connection, word by word, so meaning lands while the speaker is still talking.

Live Transcription

BulgarianTranscript

SpanishTranslation

One-way translation

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

YouTube

Two-way Bulgarian and Spanish conversation

Each side speaks naturally and hears the other in their own language. Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.

Live Conversation

Bulgarian

Bulgarian and Spanish through a single stream

Set the source and target codes once. Transcript and translation arrive interleaved on one labeled token stream, with no extra round trip.

config.json

{
  "model": "stt-rt-v5",
  "translation": {
    "type": "one_way",
    "source_language": "bg",
    "target_language": "es"
  }
}

A breakthrough in real-time Bulgarian to Spanish translation

Translate before the sentence ends

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

Directional bg to es streaming

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

Native-speaker Bulgarian STT accuracy

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

Names, numbers, and domain terms

Preserved across the pair, including phone numbers, emails, and IDs.

Bulgarian to Spanish translation is built on top of the Soniox Speech-to-Text API. Turn it on by adding a translation block to your request.

Explore the translation docs

Estimate your Bulgarian to Spanish translation cost

Set your monthly audio volume to estimate your Soniox API cost for real-time speech-to-text translation.

Pricing calculator

Stop overpaying for Bulgarian speech AI

Sonioxvs

1,000 hours of audio / month

1025501002505001k2.5k5k10k100k

Pricing assumptions

Based on public pay-as-you-go pricing. Enterprise discounts and committed-use contracts may differ. Some providers charge separately for certain features. The calculator uses the public price for the provider configuration that most closely matches Soniox.

Translate Bulgarian to any language

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

Frequently asked questions

How do I translate Bulgarian to Spanish with the API?

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?

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?

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?

Yes. Soniox outputs correctly scripted Spanish text in Latin directly in the token stream.

Does Soniox handle Bulgarian dialects and accents?

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?

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?

Soniox streams Spanish as Bulgarian is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

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Documentation

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