New: Soniox Text-to-Speech is here

Soniox for Europe

Voice AI built for EU residency, EU languages, and EU compliance

Real-time speech-to-text, text-to-speech, and translation processed inside the EU, with native-speaker accuracy across EU languages, ready to ship in the EU from day one.

EU Data Residency
GDPR · ISO/IEC 27001:2022 · HIPAA · SOC 2 Type 2
Self-serve DPA available on Soniox Console

What’s different about Soniox in Europe

Three things European teams ask about before they ship

Most voice AI vendors tick one of the boxes below. Soniox covers all three, with the same model, the same API, and the same prices.

01 / Sovereign Cloud

Audio and transcripts stay in EU

Soniox Sovereign Cloud runs the same model in-region. By requesting the EU region all project data is processed within EU jurisdiction without cross-border hops and no fallback to a US endpoint.

02 / EU AI Act ready

EU compliance by default

GDPR, ISO/IEC 27001:2022, SOC 2 Type 2, HIPAA certified with technical and data-governance documentation your team needs to satisfy regulators, auditors, and your own legal review.

03 / EU language accuracy

Verifiable language accuracy

Listing a language is not the same as transcribing it well. Soniox is benchmarked on real EU audio against every major provider, and we publish word error rate per language. For all supported languages.

01 / Sovereign Cloud

Pick the EU region. Everything else stays the same.

Same model. Same accuracy. Same streaming behavior. The only thing that changes is where your data lives.

  • check_circleAudio and transcripts remain in the EU for both processing and storage.
  • check_circleSingle API and integration path. No separate model, SDK, or billing flow.
  • check_circleRegion is set per project, so multi-market products can route audio cleanly.
Learn more about Sovereign Cloudarrow_right_alt

Sovereign Cloud regions

European UnionLive
United StatesLive
JapanLive

More regions coming soon.

02 / EU AI Act ready

Privacy and compliance, built right in

Never stored, never saved.

Audio stays in memory, everything is processed in real-time.

Built for privacy-critical use cases.

Adhering to EU security, privacy, and AI compliance standards.

Trusted where privacy matters most.

Used in industries where speech is sensitive, from healthcare to legal.

Soniox is GDPR compliant
Soniox is ISO 27001:2022 compliant
Soniox is Soc 2 Type 2 compliant
Soniox is HIPAA compliant
GDPR · ISO/IEC 27001:2022 · SOC 2 Type 2 · HIPAA

03 / EU language accuracy

Native-speaker accuracy across European languages

Speech-to-text, text-to-speech, and translation in 60+ languages including Europen languages. Built for voice agents, low-latency streaming, and production-grade deployments. Try it now.

Soniox handles code-switching natively, so a German speaker quoting an English brand name or a Spanish speaker dictating an alphanumeric reference doesn’t break the stream. One multilingual model, no need to swap mid-conversation.

Trusted by startups and enterprises

Powering the world's most demanding products

From global enterprises to frontier AI labs, teams choose Soniox for the accuracy, speed, and scale their products demand.

Perplexity integrated Soniox to power a best-in-class voice experience for millions of Perplexity users.

A global technology leader using Soniox across internal meetings, call centers, and government projects in Korea.

Using Soniox for real-time captions and voice interactions, helping bring faster and more natural speech experiences to users.

Using Soniox to power transcription and real-time speech translation across meetings and contact center products.

An enterprise AI agent platform, using Soniox to power voice AI agents across non-English markets where best-in-class voice AI is scarce.

Pioneers in AI-powered healthcare technology, dedicated to transforming the way healthcare providers deliver care.

Using Soniox for best-in-class real-time captioning in its widely used meeting notes platform.

Trusted by millions of people worldwide, using Soniox to power highly accurate transcription for phone calls and voice messages across multiple languages.

It just gets the words right — any language, any accent, any context. That’s what accuracy is supposed to look like.

Tony Wang

Cofounder & Chief Revenue Officer at Agora

We tried a dozen speech-to-text and translation services. Soniox is the best, so that's what we use.

Cayden Pierce

CEO/CTO at Mentra

A fast-growing real-time translation app, using Soniox to power low-latency speech translation for seamless multilingual communication.

As the leading provider of voicebots for automotive dealerships in Germany, we’ve faced significant challenges recognizing license plates accurately. Soniox has solved this problem with exceptional recognition of alphanumeric sequences, resulting in a much higher acceptance rate for our voicebot.

Dr. Steven Zielke

Founder & CEO of mobilApp

It’s so fast, captions appear before people even finish talking. Zero lag. No buffering. Nothing.

Dag-Inge Aas

Head of AI at Tana

Frequently asked questions

What makes Soniox different from other speech-to-text solutions?arrow_downward
Soniox is optimized for real-world speech, not just clean audio. It delivers:
- Native-speaker accuracy across 60+ languages
- Real-time speech-to-text transcription without waiting for sentence boundaries
- Streaming full-duplex text-to-speech across same 60+ languages
- Mixed-language support
- Strong handling of numbers, names, and domain-specific terms
How do I switch to the EU region?arrow_downward
Region is set when a project is created in the Soniox Console. Use the EU project’s API key and call the EU endpoint. EU region is enabled by request.
See Data Residency documentation.
How can we obtain the DPA?arrow_downward
Signed self-served DPA can be obtained on the Soniox Console Security & compliance section, under organisation settings. It’s pre-signed by Soniox and countersigned with one click. If your legal team needs redlines on top of the standard form, we handle that through support@soniox.com.
Does Soniox train models on my audio?arrow_downward
No. Audio submitted to the API is processed in memory for transcription, translation, or synthesis, and is not retained or used to train models. Full data handling terms are in the DPA and the security and privacy documentation.
Is Soniox a high-risk AI system under the EU AI Act?arrow_downward
The classification depends on what you build, not what we ship. Soniox Speech-to-Text and Soniox Text-to-Speech are general-purpose components. Most customer use cases (voice agents, captioning, dictation, meeting transcription) fall into the limited-risk category and trigger Article 50 transparency obligations rather than the full high-risk regime.

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