One platform for multilingual voice AI
Speech-to-text, text-to-speech, and translation built for real-time products with unmatched accuracy in 60+ languages.
Trusted by teams building global voice products
The complete voice AI platform
Transcribe in real-time
Transcribe speech in real time across 60+ languages, with native-speaker accuracy for multilingual, language-switching, and multi-speaker conversations.
Explore Speech-to-Text API
Generate natural speech
Create expressive, high-quality speech in 60+ languages with exceptional precision, instant voice cloning, and low-latency streaming.
Explore Text-to-Speech API
Translate in real-time
Translate speech in real time across 3,600 language pairs, with low-latency output before sentences finish and high-quality multilingual results.
Explore Speech Translation APIThe new standard for multilingual voice AI
Soniox unifies speech-to-text, text-to-speech, and translation in one platform, delivering lower latency, simpler architecture, and unmatched multilingual accuracy through a single API.
One API for the full voice stack
Use speech-to-text, text-to-speech, and translation through a single API and provider. Reduce integration complexity, simplify system design, and ship voice products faster.
Lower latency across every turn
Run transcription, translation, and speech generation on one real-time platform built for live interaction. Deliver faster turn-taking and more natural conversations.
Voice agents with native-speaker accuracy
Build voice agents that recognize and generate speech with native-speaker accuracy across 60+ languages.
Precise handling of alphanumerics
Capture and speak email addresses, phone numbers, addresses, IDs, and codes with the precision production voice agents require.
Built for the hardest parts of voice AI
Most voice platforms were built for English first. Soniox is built for high accuracy across 60+ languages, seamless language switching, alphanumerics, and low-latency interaction.
World’s most accurate speech-to-text
Unmatched recognition accuracy across languages, accents, numbers, names, and domain-specific vocabulary, engineered for fast, multi-speaker conversations and high-noise environments.
The new frontier in text-to-speech
Create expressive, high-quality speech in 60+ languages with precise control through audio tags, exceptional alphanumeric accuracy, seamless language switching, and instant voice cloning.
[warm] Hi there! This is the appointment line for Dr. Okafor's office. [clears throat] Um, I'm calling to confirm your visit on Tuesday the 14th at 2:30.
Low-latency streaming for live interaction
Transcribe speech with sub-200ms latency and start generating audio from the first few words, before the full sentence is available.
Compare Soniox side by side
Compare Soniox side by side with other providers across speech-to-text and text-to-speech. Live inputs. Transparent results.
Soniox
stt-rt-v5
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OpenAI
gpt-realtime-whisper
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Deepgram
Nova-3 Multilingual Streaming
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Use Soniox in popular frameworks
Soniox integrates seamlessly with leading real-time communication platforms, AI frameworks, automation tools, and developer SDKs.
An open source framework and developer platform for building, testing, deploying, scaling, and observing agents in production.
Twilio is a cloud-based customer engagement platform (CPaaS) that provides APIs, allowing developers to integrate voice, messaging (SMS, WhatsApp), email, and authentication capabilities into applications.
Open-source development framework designed to build applications powered by large language models (LLMs).
The open-source AI toolkit designed to help developers build AI-powered applications and agents with React, Next.js, Vue, Svelte, Node.js, and more.
Open-source AI SDK with a unified interface across multiple providers. No vendor lock-in, no proprietary formats.
n8n is a powerful, low-code/pro-code workflow automation tool that connects various applications, APIs, and databases to automate tasks.
Build the next generation of voice products, from agents and wearables to dictation, translation, and real-time multilingual experiences.
Speech infrastructure for massive scale
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
Run mission-critical systems with confidence
- 99.9% uptime
Production-hardened infrastructure with monitoring and redundancy. - 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.
"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
Build a voice agent in your language
Soniox Speech-to-Text and Text-to-Speech allow you to build voice agents that understand and speak as a native speaker.
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.
Frequently asked questions
What is the Soniox voice platform?
Which languages does the Soniox platform support?
Can I use speech-to-text and text-to-speech together in one integration?
How does Soniox handle real-time translation?
Is the Soniox platform fast enough for voice agents?
Can Soniox handle language switching mid-sentence?
How does Soniox TTS handle alphanumerics and names?
Is the Soniox platform suitable for production and enterprise use?
- Scalable, production-hardened infrastructure
- Priority support with severity-based incident response
- Regional deployment for data residency and compliance
How does Soniox handle privacy and data security?
Can I deploy Soniox in my region?
How do I get started?
Get started with the Soniox API
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, 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