English voice AI platform
Speech-to-text, text-to-speech, and live speech translation APIs for Hungarian, under one unified voice AI developer platform with in-region processing and enterprise compliance for voice products that scale.
Trusted by teams building global voice products
Build English voice products with one provider
Every Soniox product supports English through the same API, account, and infrastructure.
English speech-to-text API
Real-time and async English transcription with speaker labels, timestamps, and language switching.
English text-to-speech API
Streaming English speech that reads names, numbers, and codes exactly as written.
English speech translation
Real-time translation between English and 60+ other languages while people are still speaking.
English speech-to-text for voice agents
Streaming English recognition that knows when the speaker has finished, so agents reply at the right moment.
English on the Soniox voice AI platform
What English covers, and what Soniox APIs support for it.
English
- Native name
- English
- Speakers
- 1.5 billion
- Spoken in
- United States, United Kingdom, Canada, Australia, New Zealand, Ireland, South Africa, India, Jamaica, Trinidad and Tobago, Barbados, Bahamas, Belize, Guyana, Malta
- Script
- Latin, left to right
- Dialects
- American English, British English, Australian English, Indian English, South African English
Soniox support
- Speech-to-text
- Real-time streaming & Async
- Text-to-speech
- Real-time streaming & REST
- Speech translation
- English to and from 60+ languages
- Data residency
- US, EU, India; coming soon: Australia, Canada, UK
- Compliance
- SOC 2 Type 2, ISO/IEC 27001:2022, HIPAA, GDPR
- Uptime
- 99.9%
Why companies choose Soniox for English
The hard parts of voice AI in production are mixed languages, exact details, and live conversation.
One vendor for the voice stack
English speech-to-text, text-to-speech, and translation share one API and one provider. Fewer integrations to build and fewer vendors to review.
English mixed with other languages
People switch between English and other languages mid-sentence. Soniox follows the switch in both transcription and speech generation, with no configuration.
Names, numbers, and codes
Phone numbers, IDs, email addresses, and codes in English are transcribed exactly as spoken and read exactly as written.
Built for live conversation
Speech-to-text streams English words as they are spoken, and text-to-speech starts audio from the first few words of text.
Voice AI API platform for English markets
Keep English audio and transcripts in the region your customers and regulators require.
In-region processing
Available regions: US, EU, Japan, India. Audio and transcripts stay in the region you choose, for both processing and storage.
Your data stays yours
Audio, transcripts, and metadata sent to the Soniox API are never used to train or improve Soniox models.
99.9% uptime and priority support
Production-hardened infrastructure with monitoring and redundancy, and severity-based incident response.
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.
Pricing for English voice AI APIs
Scale with confidence and predict your costs with a single usage-based pricing model across all languages.
Speech-to-text
~$0.10/h of async, ~$0.12/h of real-time.
Text-to-speech
~$0.70/h of generated audio.
Speech translation
~$0.18/h of translated speech.
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.
Uses Soniox voice AI to power human-quality voice agents with exceptional accuracy, speed, and reliability, across languages and at massive scale.
Genspark uses Soniox to power fast, accurate voice experiences across its all-in-one AI workspace.
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 Germany’s leading voicebot provider for automotive dealerships, Soniox has transformed our recognition of customer IDs and alphanumerics, driving much higher voicebot acceptance rates.”
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
One platform for speech-to-text, text-to-speech, and speech translation across 60+ languages, with real-time streaming and native-speaker accuracy.
Voice AI platform in 60+ languages
Speech-to-text, text-to-speech, and translation for every supported language, on the same API.
Frequently asked questions
Which Soniox products support English?
Where is English audio processed and stored?
Which security and compliance standards does Soniox meet?
How much does English speech AI cost on Soniox?
Can Soniox handle English mixed with other languages?
What uptime and support does Soniox offer?
Does Soniox work with voice AI frameworks?
How do we evaluate Soniox for English or discuss a partnership?
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Pricing details