Korean speech-to-text API
STT API for real-time and async Korean transcription in voice agents, dictation, and meeting notes. With speaker diarization, end-of-turn detection, and mid-sentence code-switching between Korean and 60+ other supported languages.
$0.10/hour async · $0.12/hour real-time
Looking for Korean TTS API?
Try Soniox Text-to-Speech
Trusted by teams building global voice products
Korean speech recognition for production voice apps
Korean is spoken by more than 82 million people across South Korea, North Korea, United States, and beyond. If your voice agent, dictation app, or meeting notetaker serves them, speech-to-text has to handle Korean the way people actually speak it: regional accents, speakers who switch to English mid-sentence, and names, numbers, and IDs that have to come out exactly right.
Soniox STT transcribes Korean with native-speaker accuracy in real time over a WebSocket or asynchronously from recorded files, through one multilingual API built for 60+ languages. It follows speakers into other languages, labels who said what, and returns timestamps. Transcription biasing toward Korean is available through the language hints option.
Korean native-speaker accuracy
Accurate Korean speech recognition across accents, dialects, and real-world conversational speech.
“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 MentraAutomatically detect and switch languages with Korean
Soniox identifies the language automatically and follows changes between Korean and other languages live, even within the same sentence.
Get every character right in Korean
Names, phone numbers, addresses, IDs, serial numbers, and other structured information spoken in Korean are recognized precisely.
Phone number
제 번호는 +49 172 684 9317입니다.
Reference ID
사건 번호는 AX-4927-B입니다.
Mixed alphanumeric
기기 시리얼 번호는 XR8Q-19F2입니다.
International name
Nguyễn Minh Anh 님이 3시에 회의에 참석하실 거예요.
Improve Korean accuracy with context
Provide terminology, names, or custom vocabulary to guide Korean recognition toward the right words, without retraining models.
Know when the speaker is finished
Soniox detects when a Korean speaker has actually completed their thought, not just when they pause.
Know who said what in Korean
Soniox separates Korean speakers in real time, so every word stays connected to the person who said it.
Estimate your Korean speech-to-text API cost
Choose real-time or async transcription and set your monthly audio volume to estimate your Soniox API cost.
Pricing calculator
Korean speech-to-text API pricing
1,000 hours of audio / month
Pricing assumptions
Based on public pay-as-you-go pricing. Enterprise discounts and committed-use contracts may differ. Some providers charge separately for certain features. The calculator uses the public price for the provider configuration that most closely matches Soniox.
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, India
Coming soon: Korea, Australia, Canada, 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
Korean speech-to-text use cases
Soniox is built for Korean voice applications where accuracy, latency, and reliability matter at scale.
Voice agents
Streaming Korean recognition that knows when the speaker has finished, so agents reply at the right moment.
Voice dictation
Real-time Korean dictation that writes names, numbers, and codes exactly as spoken.
Meeting notes
Korean meeting transcripts with speaker labels and timestamps, ready for summaries.
Call center
Real-time transcription, agent assist, and searchable records for every Korean customer interaction.
Medical transcription
Transcription of Korean clinical speech, including specialist terminology and patient documentation.
Speech translation
Real-time or async translation of spoken Korean into 60+ languages.
Start transcribing Korean speech from $0.10 per hour of audio.
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.
Go global with one API
Get production-ready speech-to-text recognition, transcription, and translation in 60+ languages.
Also for Korean: Korean text-to-speech API for voice output, and the Korean voice AI platform for enterprise deployment.
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
Does Soniox support real-time speech-to-text for Korean?
How accurate is Soniox for Korean?
How much does the Korean speech-to-text API cost?
Which SDKs can I use?
Can Soniox handle mixed-language speech involving Korean?
Does Soniox support real-time translation from and to Korean?
Can Soniox recognize numbers, names, and alphanumerics in Korean?
Does Soniox support speaker diarization in Korean?
Can I improve accuracy for domain-specific Korean audio?
Where is Korean speech data processed, and is it used for training?
Is Soniox ready for production Korean workloads?
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