Soniox

Multilingual Speech AI platform: Realtime STT, TTS & Translation APIs

by Katheryn McCullough

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Jun 25, 2026 AI & Machine Learning

multilingual speech_to_text text_to_speech translation voice-ai

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About

Soniox is a multilingual voice AI platform that unifies speech-to-text, text-to-speech, and real-time translation in a single API across 60+ languages and 3,600 language pairs. It's built for the hardest parts of voice AI — seamless mid-sentence language switching, alphanumerics, foreign names, multi-speaker conversations, and high-noise environments — with native-speaker accuracy rather than English-first performance.Low-latency streaming transcribes with sub-200ms latency and starts generating speech from the first few words. The same models and API deploy globally with in-region processing to meet latency, data residency, and regulatory needs. Trusted by Perplexity, Samsung, LG, Wonderful, DeliverHealth, and many others.Whatever you're building — voice agents, wearables, live captioning, dictation, or speech-to-speech translation — Soniox is the speech layer powering your voice AI product.