Soniox

What Soniox Does

Soniox is a comprehensive multilingual voice AI platform that provides real-time speech-to-text, text-to-speech, and speech translation capabilities across 60+ languages through a unified API. Built for the hardest parts of voice AI, Soniox delivers native-speaker accuracy for multilingual, language-switching, and multi-speaker conversations, making it the foundation for voice-enabled applications that demand precision and low latency.

Core Capabilities

Soniox provides three primary APIs that work seamlessly together:

• Speech-to-Text API: Real-time transcription with sub-200ms latency across 60+ languages, with exceptional accuracy for accents, numbers, names, and domain-specific vocabulary. Handles multi-speaker conversations and high-noise environments.
• Text-to-Speech API: Generate high-fidelity, hallucination-free speech in 60+ languages with precise handling of alphanumerics, foreign names, borrowed words, and seamless language switching. Ultra-low-latency streaming for live interactions.
• Speech Translation API: Real-time, context-aware translation across 3,600 language pairs with low-latency output that begins before sentences finish, engineered for code-switching environments where speakers switch languages mid-sentence.

Who It's For

Soniox serves developers building voice-enabled products, from startups to global enterprises. Trusted by companies like Perplexity, LiveKit, and Agora, the platform powers demanding use cases including voice agents, wearables, dictation systems, speech translation apps, meeting notes platforms, call centers, and real-time captioning services. It's designed for teams that need best-in-class accuracy across multiple languages, not just English-first solutions.

Key Use Cases

• Voice Agents: Power conversational AI with low-latency speech recognition and natural speech output for responsive, human-like interactions
• Wearables: Live voice experiences on devices requiring streaming speech with minimal delay
• Speech Translation: Direct integration of speech-to-text or speech-to-speech translation into products
• Dictation & Voice Typing: Accurate speech-to-text for messages, notes, documents, and workflows
• Real-time Captioning: Live transcription and translation for meetings and live events

What Sets Soniox Apart

Unlike most voice platforms built for English first, Soniox is engineered from the ground up for multilingual accuracy. The platform excels at handling mixed-language conversations, seamless language switching mid-sentence, speaker separation, alphanumerics, and foreign names—challenges that cause other providers to fail. With one global API deployed locally for in-region processing, Soniox meets latency, data residency, and regulatory requirements while maintaining consistent accuracy.

Privacy & Compliance

Audio is never stored—everything stays in memory and is processed in real-time. Soniox adheres to SOC 2 Type 2, ISO/IEC 27001:2022, HIPAA, and GDPR standards, making it suitable for privacy-critical industries including healthcare and enterprise environments.

Getting Started

Developers can integrate Soniox through comprehensive API documentation, with flexible usage-based pricing that scales with demand. The platform also offers the Soniox App for individuals and teams who want ready-to-use transcription, translation, and dictation capabilities without development work.