Overview
Soniox is a real-time multilingual speech AI platform that provides a unified API for speech-to-text, text-to-speech, and speech translation across 60+ languages. Founded to address the limitations of English-first voice platforms, Soniox delivers native-speaker accuracy, sub-200ms latency, and seamless language switching for live voice applications. The company serves a broad range of clients, from global enterprises like Samsung and LG to AI startups like Perplexity, and is trusted in privacy-sensitive industries such as healthcare and enterprise. Soniox is headquartered in the United States and offers both a ready-to-use mobile and desktop app for individuals and teams, as well as a developer API for custom integrations.
Services & Expertise
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Real-Time Speech-to-Text API: Soniox transcribes live speech in 60+ languages with native-speaker accuracy, handling multiple speakers, accents, numbers, names, and domain-specific vocabulary. The API is engineered for fast, multi-speaker conversations and high-noise environments, delivering sub-200ms latency for real-time interaction.
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Text-to-Speech API: The TTS API generates natural, high-fidelity speech in 60+ languages with precise handling of alphanumerics, foreign names, borrowed words, and language switching. It supports ultra-low-latency streaming, starting audio output from the first few words before the full sentence is available.
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Speech Translation API: Soniox provides real-time, context-aware translation across 60+ languages and 3,600 language pairs. It is engineered for code-switching environments where speakers switch languages mid-sentence, delivering low-latency output before sentences finish.
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Soniox App: A ready-to-use application for individuals and teams that offers live transcription, real-time speech translation, dictation into any text field, and automatic capture of meetings, notes, and ideas. Available on mobile and desktop with a single subscription.
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Voice Agent Integration: Soniox powers conversational AI with low-latency speech recognition and natural speech output, integrated with frameworks like LiveKit and Pipecat for building multilingual voice bots and agents.
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Wearable Device Support: The platform delivers live voice experiences on devices that require streaming speech recognition and generation with minimal delay, suitable for smart glasses, earbuds, and other wearables.
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Dictation and Voice Typing: Soniox turns speech into clean, reliable text for messages, notes, documents, and workflows, with high accuracy across languages and domains.
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Data Residency and Compliance: Soniox offers in-region processing to meet latency, data residency, and regulatory requirements. The platform is SOC 2 Type 2, ISO/IEC 27001:2022, HIPAA, and GDPR compliant, with audio processed in real-time and never stored.
How They Work
Soniox provides a straightforward integration process for developers and a ready-to-use app for end users. For the API, developers sign up at the Soniox console, obtain API keys, and integrate the SDK or WebSocket endpoints into their applications. The platform supports real-time streaming, allowing audio to be sent and processed incrementally with sub-200ms latency. For the Soniox App, users download the application, create an account, and immediately start transcribing, translating, or dictating speech. The app works on mobile and desktop, with automatic language detection and speaker separation. Soniox offers comprehensive documentation, a cookbook, and video tutorials to accelerate onboarding. For enterprise clients, custom packages and dedicated support are available.
Ideal Client Profile
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A global enterprise needing multilingual voice AI: Companies like Samsung and LG use Soniox for real-time captions, voice interactions, and call center analytics across multiple languages, benefiting from native-speaker accuracy and low latency.
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A startup building a voice agent or AI assistant: Perplexity integrated Soniox to power a best-in-class voice experience for millions of users, leveraging the API for responsive, human-like interactions.
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A healthcare provider requiring HIPAA-compliant transcription: DeliverHealth, a pioneer in AI-powered healthcare technology, uses Soniox for accurate, secure speech-to-text in clinical settings.
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A meeting notes platform needing real-time captioning: Fireflies.ai uses Soniox for best-in-class real-time captioning in its widely used meeting notes platform, ensuring accuracy across languages and accents.
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A real-time translation app for multilingual communication: Transync, a fast-growing translation app, uses Soniox to power low-latency speech translation for seamless multilingual conversations.
Pricing & Engagement Models
Soniox offers flexible pricing based on usage, with pay-as-you-go options for the API and subscription plans for the Soniox App. The API pricing is designed to scale with usage, and detailed pricing information is available on the Soniox website. For enterprise clients, custom packages with dedicated support, data residency options, and volume discounts are available. The Soniox App subscription provides access to all features across mobile and desktop platforms. Soniox emphasizes transparent pricing with no long-term commitments required.
Why Consider Them
Soniox differentiates itself through its focus on real-world speech accuracy across 60+ languages, not just English. The platform handles mixed-language conversations, alphanumerics, names, and domain-specific vocabulary with native-speaker precision. Sub-200ms latency enables live interaction without buffering. Soniox is trusted by major enterprises like Samsung, LG, and Perplexity, and is certified for SOC 2 Type 2, ISO 27001, HIPAA, and GDPR, making it suitable for privacy-critical industries. The unified API for speech-to-text, text-to-speech, and translation simplifies development, while the Soniox App provides a ready-to-use solution for individuals and teams.
