Why teams choose Telnyx STT
The fastest, most flexible, and most scalable way to add real-time transcription to any app.
Access Telnyx STT, Google STT, and Deepgram through one unified API. Switch automatic speech recognition (ASR) engines based on cost, accuracy, or languages without changing your code. It’s the easiest way to build and scale multilingual speech recognition.
Transcribe speech across 100+ global languages and dialects. From widely spoken languages to low-resource regional dialects, Telnyx makes it easy to build speech experiences that work anywhere.
Stream audio and receive text back instantly with ultra-low latency. Telnyx delivers fast, consistent performance, even at high volumes, with a private global network built for real-time voice. So your transcription feels seamless every time.
Telnyx offers enterprise-grade security and flexible data residency, including EU hosting for GDPR compliance. Teams can keep audio and transcription data in-region whether in the US or EU to meet regulatory requirements and build secure, privacy-first speech workflows.
Explore your STT options
The right speech engine for every experience
Build global-ready voice experiences. Telnyx gives you access to multiple ASR engines through one integration. Choose based on accuracy, language coverage, cost, or latency and change engines anytime without re-architecting your product.
Telnyx STT
The Telnyx in-house ASR engine uses OpenAI’s Whisper Large-V3-Turbo under the hood and runs on Telnyx’s real-time streaming infrastructure. It offers the broadest multilingual coverage with 100 supported languages, auto-language detection.
Google STT
Google supports over 80 languages with strong coverage across African languages and diverse regional variants. It is a stable, general-purpose transcription engine well suited for large-scale, multilingual applications.
Deepgram Nova 2
Nova 2 supports 54 languages and delivers strong ASR accuracy with modern accent and dialect variation. It is ideal for AI agents, customer interactions, and use cases where precise recognition matters across supported languages.
Deepgram Nova 3
Nova 3 supports 20 languages and is a newer model focused on premium audio quality within its smaller range. It works best for high-value interactions that require maximum clarity in languages the model supports.
Deepgram Flux
Deepgram Flux is built for responsive, real-time transcription where conversational flow matters. It helps eliminate interruptions and false cutoffs with smarter turn detection, making live voice experiences feel more natural and reliable.
Azure STT
Azure Speech-to-Text is a strong option for teams building production voice workflows that need reliable, real-time transcription, broad language coverage, and enterprise-ready performance
Telnyx STT
The Telnyx in-house ASR engine uses OpenAI’s Whisper Large-V3-Turbo under the hood and runs on Telnyx’s real-time streaming infrastructure. It offers the broadest multilingual coverage with 100 supported languages, auto-language detection.
Google STT
Google supports over 80 languages with strong coverage across African languages and diverse regional variants. It is a stable, general-purpose transcription engine well suited for large-scale, multilingual applications.
Deepgram Nova 2
Nova 2 supports 54 languages and delivers strong ASR accuracy with modern accent and dialect variation. It is ideal for AI agents, customer interactions, and use cases where precise recognition matters across supported languages.
Deepgram Nova 3
Nova 3 supports 20 languages and is a newer model focused on premium audio quality within its smaller range. It works best for high-value interactions that require maximum clarity in languages the model supports.
Deepgram Flux
Deepgram Flux is built for responsive, real-time transcription where conversational flow matters. It helps eliminate interruptions and false cutoffs with smarter turn detection, making live voice experiences feel more natural and reliable.
Azure STT
Azure Speech-to-Text is a strong option for teams building production voice workflows that need reliable, real-time transcription, broad language coverage, and enterprise-ready performance
Power assistants, apps, and automations with STT
AI companions and virtual agentsEnable real-time speech input for conversational AI, customer support bots, and virtual agents. Fast, accurate transcription keeps dialogues natural and seamless.
- Live transcription and accessibility
Provide instant captions, subtitles, and real-time meeting notes. Improve accessibility for users with language barriers or hearing impairments.
- Hands-free productivity and dictation
Capture notes and tasks without manual typing.Perfect for doctors, drivers, field technicians, and on-the-go professionals.
- Multilingual experiences
Transcribe speech across languages, accents, and regional dialects. Ideal for travel, hospitality, e-learning, logistics, and support workflows.
- Voice control for devices and interfaces
Power responsive, low-latency voice commands for kiosks, smart devices, automotive systems, and AR/VR experiences.
- Contact center automation
Transcribe customer calls, support interactions, and agent workflows in real time. Improve routing, analytics, and AI-assisted support with accurate, instant speech recognition.