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Welsh to Finnish speech translation API

Stream Welsh (Cymraeg) speech and get Finnish (Suomi) back in real time. One WebSocket, ISO codes cy to fi, and ultra-low latency for voice agents and live apps.

Trusted by teams building global voice products

Production-ready Welsh to Finnish translation API

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

Welsh (Indo-European > Celtic > Brittonic) and Finnish (Uralic > Finnic) come from different language families, so word order and morphology differ. Soniox reorders meaning in-stream instead of word by word.

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

A breakthrough in real-time Welsh to Finnish translation

Translate before the sentence ends

Finnish meaning lands as Welsh is spoken, not after the caption catches up.

Directional cy to fi streaming

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

High quality Finnish output

Same model across every language, including historically underserved ones.

Native-speaker Welsh STT accuracy

Accurate Finnish translation starts with accurate Welsh 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": "cy",
    "target_language": "fi"
  }
}

Welsh and Finnish through a single stream

Welsh to Finnish translation is built on top of Soniox Speech-to-Text API. Every spoken word is transcribed, and Finnish translation streams mid-sentence in the same labeled token stream.

Turn it on by adding a translation block with source_language: "cy" and target_language: "fi". It runs on the same WebSocket and the same model, with no extra round trip.

Live Welsh to Finnish: written and spoken

Welsh to Finnish speech-to-text

Live Welsh speechFinnish text

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

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

Welsh to Finnish speech-to-speech

Live Welsh speechSpoken Finnish

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

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

Live Welsh to Finnish translation in action

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

Welsh speaker says: “Ie, a falle cawn ni bara brith yn y half-time, os nad yw'r siop yn out of stock.”
Translated into Finnish in real time.

One-way translation

Translate live Welsh into Finnish. Everyone in the conversation sees the same translated stream.

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

Welsh speaker talks in Welsh.
Finnish speaker hears Finnish.
Finnish speaker replies in Finnish.
Welsh speaker hears Welsh.

Two-way translation

Translate between Welsh and Finnish 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 Welsh at 1.25% word error rate and Finnish 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 Welsh and Finnish

Welsh has roughly 900,000 speakers across United Kingdom. Finnish has roughly 5,500,000 speakers across Finland.

Welsh is one of the oldest living languages in Europe and the most widely spoken Celtic language today.

Finnish is not related to the neighboring Scandinavian languages; it belongs to the Uralic family.

Soniox makes Welsh to Finnish usable in real-time translation across every supported pair.

Translate Welsh to any language

From Welsh to Finnish, or Welsh to any of 60+ supported languages. All real-time.

AfrikaansAlbanianArabicAzerbaijaniBasqueBelarusianBengaliBosnianBulgarianCatalanChineseCroatianCzechDanishDutchEnglishEstonianFinnishFrenchGalicianGermanGreekGujaratiHebrewHindiHungarianIndonesianItalianJapaneseKannadaKazakhKoreanLatvianLithuanianMacedonianMalayMalayalamMarathiNorwegianPersianPolishPortuguesePunjabiRomanianRussianSerbianSlovakSlovenianSpanishSwahiliSwedishTagalogTamilTeluguThaiTurkishUkrainianUrduVietnamese

Frequently asked questions

How do I translate Welsh to Finnish with the API?
Add a translation block to your real-time request with source_language "cy" and target_language "fi". Soniox transcribes Welsh and streams the Finnish translation over the same WebSocket.
Is Welsh to Finnish translation real-time?
Yes. Soniox streams Finnish while Welsh is still being spoken, so meaning arrives mid-sentence instead of after the sentence ends.
What about translating Finnish to Welsh?
That direction is supported too. See the Finnish to Welsh page, or use two-way translation to run both directions in one session.
Does Soniox handle Welsh dialects and accents?
Yes. Soniox handles Welsh dialects like North Welsh (Gogledd) and South Welsh (De) in a single model, so Finnish translation stays accurate across regions.
Which other providers support Welsh to Finnish?
Based on their public docs, OpenAI and Azure list both Welsh and Finnish for real-time translation. Soniox is the only one that also supports two-way live translation across 60+ languages.
How fast is Welsh to Finnish translation?
Soniox streams Finnish as Welsh is being spoken, with ultra-low latency. Translation arrives before the sentence ends.

Simple, usage-based pricing

Translate live audio from Welsh to Finnish 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.

View pricing

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