Spanish to Bulgarian speech translation API
Stream Spanish (Español) speech and get Bulgarian (Български) back in real time. One WebSocket, ISO codes es to bg, and ultra-low latency for voice agents and live apps.
Trusted by teams building global voice products
Production-ready Spanish to Bulgarian translation API
Real Spanish 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.
Spanish (Indo-European > Romance > Western Romance) 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.
Spanish is written in Latin and Bulgarian in Cyrillic, so Soniox emits correctly scripted Bulgarian text.
A breakthrough in real-time Spanish to Bulgarian translation
Translate before the sentence ends
Bulgarian meaning lands as Spanish is spoken, not after the caption catches up.
Directional es to bg streaming
Set the source and target codes once. Both arrive in a single labeled token stream.
High quality Bulgarian output
Same model across every language, including historically underserved ones.
Native-speaker Spanish STT accuracy
Accurate Bulgarian translation starts with accurate Spanish recognition across accents and language switching.
Names, numbers, and domain terms
Preserved across the pair, including phone numbers, emails, and IDs.
{
"model": "stt-rt-v5",
"translation": {
"type": "one_way",
"source_language": "es",
"target_language": "bg"
}
}Spanish and Bulgarian through a single stream
Spanish 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: "es" and target_language: "bg". It runs on the same WebSocket and the same model, with no extra round trip.
Live Spanish to Bulgarian: written and spoken
Spanish to Bulgarian speech-to-text
Translate live Spanish into written Bulgarian with the Soniox STT API. Soniox streams the Spanish transcript and the Bulgarian translation as speech happens.
Use it for Bulgarian captions, subtitles, meeting translation, agent assist, and multilingual transcription.
Spanish to Bulgarian speech-to-speech
Build full spoken Spanish to Bulgarian translation by combining Soniox STT and Soniox TTS. Soniox recognizes Spanish, translates it, and speaks Bulgarian with low latency.
Use it for live interpreters, bilingual voice agents, travel assistants, and customer support.
Live Spanish to Bulgarian translation in action
Stream Spanish to Bulgarian one-way to push all speech into Bulgarian, or two-way to keep a bilingual conversation flowing between the two languages.
One-way translation
Translate live Spanish into Bulgarian. Everyone in the conversation sees the same translated stream.
Ideal for live captions, multilingual meetings, broadcasts, lectures, and customer calls.
Two-way translation
Translate between Spanish 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 Spanish at 1.25% word error rate and Bulgarian at 1.25% word error rate. Accurate recognition on both sides is what makes the translation reliable.
Speech-to-Text
Native-speaker accuracy across 60+ languages, with support for multilingual speech, alphanumerics, speaker diarization, context.
Translation
Real-time streaming translation across 3,600 language pairs, built for high quality and low delay across all supported languages.
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.
About Spanish and Bulgarian
Spanish has roughly 500,000,000 speakers across Spain, Mexico, Colombia, and Argentina. Bulgarian has roughly 8,000,000 speakers across Bulgaria.
Spanish is the second most spoken language in the world by native speakers, after Mandarin Chinese.
The Cyrillic alphabet was developed in the First Bulgarian Empire in the 9th century.
Soniox makes Spanish to Bulgarian usable in real-time translation across every supported pair.
Translate Spanish to any language
From Spanish to Bulgarian, or Spanish to any of 60+ supported languages. All real-time.
Frequently asked questions
How do I translate Spanish to Bulgarian with the API?
Is Spanish to Bulgarian translation real-time?
What about translating Bulgarian to Spanish?
Does Soniox handle Latin to Cyrillic output?
Does Soniox handle Spanish dialects and accents?
Which other providers support Spanish to Bulgarian?
How fast is Spanish to Bulgarian translation?
Simple, usage-based pricing
Translate live audio from Spanish to Bulgarian from ~$0.18/hour.
Translation is already built into Soniox Speech-to-Text API. When turned on, it adds about ~$0.06/hour in output token costs.
Ready to get started?
Create an account instantly, or contact us to design a custom package for your business.
Build with APIDocumentation
Get up and running in minutes and spend your time building the product, not wrestling with the API.
Explore docsSee what you’ll pay
Pay only for what you use with our flexible pricing. Built to scale with you.
Pricing details