New: Soniox v5 Real-Time is here

Spanish to Catalan speech translation API

Stream Spanish (Español) speech and get Catalan (Català) back in real time. One WebSocket, ISO codes es to ca, and ultra-low latency for voice agents and live apps.

Trusted by teams building global voice products

Production-ready Spanish to Catalan translation API

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

Spanish and Catalan both belong to the Indo-European > Romance > Western Romance family, so cognates and shared structure carry over cleanly into the translated Catalan output.

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

A breakthrough in real-time Spanish to Catalan translation

Translate before the sentence ends

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

Directional es to ca streaming

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

High quality Catalan output

Same model across every language, including historically underserved ones.

Native-speaker Spanish STT accuracy

Accurate Catalan 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.

config.json
{
  "model": "stt-rt-v5",
  "translation": {
    "type": "one_way",
    "source_language": "es",
    "target_language": "ca"
  }
}

Spanish and Catalan through a single stream

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

Live Spanish to Catalan: written and spoken

Spanish to Catalan speech-to-text

Live Spanish speechCatalan text

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

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

Spanish to Catalan speech-to-speech

Live Spanish speechSpoken Catalan

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

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

Live Spanish to Catalan translation in action

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

Spanish speaker says: Necesito tu feedback sobre la ruta a la sierra.
Translated into Catalan in real time.

One-way translation

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

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

Spanish speaker talks in Spanish.
Catalan speaker hears Catalan.
Catalan speaker replies in Catalan.
Spanish speaker hears Spanish.

Two-way translation

Translate between Spanish and Catalan 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 Catalan 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 Catalan

Spanish has roughly 500,000,000 speakers across Spain, Mexico, Colombia, and Argentina. Catalan has roughly 10,000,000 speakers across Spain and Andorra.

Spanish is the second most spoken language in the world by native speakers, after Mandarin Chinese.

Catalan is the only official language of Andorra.

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

Frequently asked questions

How do I translate Spanish to Catalan with the API?
Add a translation block to your real-time request with source_language "es" and target_language "ca". Soniox transcribes Spanish and streams the Catalan translation over the same WebSocket.
Is Spanish to Catalan translation real-time?
Yes. Soniox streams Catalan while Spanish is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating Catalan to Spanish?
That direction is supported too. See the Catalan to Spanish page, or use two-way translation to run both directions in one session.
Spanish and Catalan are both Indo-European > Romance > Western Romance — does that affect quality?
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 Spanish dialects and accents?
Yes. Soniox handles Spanish dialects like Castilian, Latin American Spanish, and Andalusian in a single model, so Catalan translation stays accurate across regions.
Which other providers support Spanish to Catalan?
Based on their public docs, OpenAI, Google, Azure, and Speechmatics list both Spanish and Catalan for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is Spanish to Catalan translation?
Soniox streams Catalan as Spanish is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

Simple, usage-based pricing

Translate live audio from Spanish to Catalan 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.

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