New: Soniox Text-to-Speech is here

Text-to-speech built for precision

Generate high-fidelity speech in 60+ languages, built for names, alphanumerics, language switching, and ultra-low-latency streaming.

Built for the hardest parts of speech generation

Text-to-speech has improved dramatically, but production systems still break on the details that matter most.

Phone numbers get scrambled. Email addresses are spoken incorrectly. Foreign names are mispronounced. Mixed-language text falls apart. Latency is too high for real-time conversation. And at scale, many providers struggle to stay consistent and support real production workloads.

Soniox TTS is built to solve these problems. It handles the real-world text patterns that other systems still get wrong, delivering high-fidelity speech across 60+ languages with robust pronunciation, precise rendering of alphanumerics, natural language switching, ultra-low-latency streaming, and infrastructure designed for production scale.

TTS that gets the details right

Native-speaker quality in 60+ languages

Generate speech with natural pronunciation and consistent quality across 60+ languages, not just English.

Hallucination-free speech generation

The text you send is exactly what gets spoken. No invented words, no dropped content, and no unexpected substitutions.

Soniox is used to build Wearables

Alphanumerics spoken correctly

Speak email addresses, phone numbers, addresses, IDs, and codes with precision, exactly as typed.

Soniox is used to build Wearables

Correct pronunciation for names and foreign words

Handle person names, place names, brand names, and borrowed words with the pronunciation users expect.

Streaming before the sentence ends

Start generating speech from the first few words, before the full sentence is available, for ultra-low-latency voice agents and live systems.

Seamless language switching mid-sentence

Speak mixed-language text naturally in a single utterance, with the right flow and pronunciation across language boundaries.

Soniox is used to build Wearables

Speech infrastructure for massive scale

Soniox Text-to-Speech API performance and reliability

Build on one API and deploy in your region

Use the same models and API everywhere, with in-region processing to meet latency, data residency, and regulatory requirements.

Available: US, EU, Japan
Coming soon: Korea, Australia, Canada, India, Saudi Arabia, UK, Brazil

View data residency docsarrow_forward
Soniox Text-to-Speech API performance and reliability

Run mission-critical systems with confidence

  • 99.9% uptime
    Production-hardened infrastructure with monitoring and redundancy.
  • Ultra-low-latency streaming
    Process speech in real time with low latency for responsive voice applications.
  • Priority support
    Severity-based incident response with direct access to the Soniox team.
Onvego uses Soniox Text-to-Speech API for multilingual voice experiences

"Before Soniox, our international users always had a noticeably different experience. Now accuracy and responsiveness match across all regions…it feels like one system instead of five."

Alon Yair CTO of Onvego

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 leading global security, privacy, and compliance standards.

Trusted where privacy matters most.

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

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

Frequently asked questions

Which languages does Soniox Text-to-Speech support?arrow_downward
Soniox Text-to-Speech supports 60+ languages with native-speaker fluency. This includes major global languages and many regional languages, with consistent quality across all of them.
How does Soniox TTS handle phone numbers, emails, and other alphanumerics?arrow_downward
Soniox TTS renders alphanumerics exactly as written. Phone numbers, email addresses, IDs, PINs, and codes are spoken correctly and consistently, without scrambled digits or dropped characters.
What does "hallucination-free" mean for TTS?arrow_downward
It means what you send is what gets spoken. Soniox TTS does not invent words, drop content, or make unexpected substitutions. The output faithfully matches your input text.
Can Soniox TTS handle mixed-language text in a single utterance?arrow_downward
Yes. Soniox TTS supports seamless language switching mid-sentence, pronouncing each language segment with the correct accent and flow, without breaking the natural rhythm of the speech.
How does Soniox TTS pronounce names and foreign words?arrow_downward
Soniox TTS handles person names, place names, brand names, and borrowed words with the pronunciation users expect, even when they originate from a different language than the surrounding text.
Is Soniox TTS fast enough for real-time voice agents?arrow_downward
Yes. Soniox TTS supports streaming speech generation, starting audio output before the full sentence is available. This enables ultra-low-latency responses for voice agents and live conversational systems.
Is Soniox TTS suitable for production and enterprise workloads?arrow_downward
Yes. Soniox TTS is built for high-concurrency production environments, offering:
- 99.9% uptime
- Scalable, production-hardened infrastructure
- Priority support with severity-based incident response
- Regional deployment for data residency compliance
How does Soniox handle privacy and data security?arrow_downward
Speech data is processed and stored entirely within your selected region, supporting data residency and regulatory requirements. Soniox is designed with privacy, security, and enterprise compliance in mind.
How do I get started?arrow_downward
You can explore the API documentation to start building immediately, or contact Soniox for production and enterprise deployments.
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Documentation

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See what you’ll pay

Pay only for what you use with our flexible pricing. Built to scale with you.

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