Soniox
Soniox builds foundational voice AI so developers, businesses, and individuals can understand and use speech across languages, accents, and environments. Its unified platform provides speech-to-text, text-to-speech, and translation for real-time products and global deployment; its stated mission is to help the world understand every conversation.
At a Glance
- Developers and businesses building voice products
- Voice-agent and conversational-AI companies
- Meeting and productivity software
- Call-center and customer-support platforms
- +2 more
AI Tools by Soniox
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Soniox
Multilingual Speech AI API
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Latest News
Introducing Soniox STT v6 with agent text input and agent voice echo cancellation
Meet the new Soniox voice library with 200+ built-in voices
Soniox launches regional deployment in India with data residency
Soniox Text-to-Speech v2 launches with expressive control and voice cloning
Products & Services
Real-time and asynchronous transcription across 60+ languages, supporting multilingual and code-switched speech, speaker diarization, language identification, endpoint detection, context customization, voice typing, meetings, and voice agents.
Streaming, natural speech generation in 60+ languages with expressive controls, precise handling of names and alphanumerics, instant voice cloning, and low-latency operation.
Real-time speech-to-text translation across 60+ languages and 3,600 language pairs, with one-way or two-way translation for agents, captions, and multilingual meetings.
Voice workspace for Smart Scribe, translation, voice typing, recording, transcript sharing, summaries, and collaboration; available on mobile, desktop, and web.
Market Position
Soniox positions itself as a unified, multilingual voice-AI platform rather than a single-purpose transcription API. It emphasizes native-speaker accuracy across 60+ languages, code-switching, names and numbers, low latency, speaker-aware recognition, and integrated STT/TTS/translation; relevant alternatives include OpenAI, Deepgram, Google Cloud Speech-to-Text, Microsoft Azure Speech, AssemblyAI, ElevenLabs, Cartesia, and Amazon Transcribe/Polly.
Leadership
Founders
Klemen Simonic
Engineer and AI researcher who has worked on speech, language, and large-scale intelligence since 2008, including roles or work spanning Stanford University, Google, and Meta; Forbes described him as having worked more than four years on speech AI at Facebook.
Ambroz Bizjak
Computer scientist, researcher, and systems architect; Soniox identifies him as co-founder and Chief Architect responsible for foundational AI and large-scale systems technology.
Executive Team
Klemen Simonic
Founder and CEO
AI engineer and researcher with experience spanning Stanford University, Google, Meta/Facebook speech AI, and large-scale intelligence systems.
Ambroz Bizjak
Co-founder and Chief Architect
Computer scientist, researcher, and systems architect who shapes Soniox's foundational AI and large-scale systems technology.
Founding Story
Soniox was founded in April 2020 in California to deeply understand audio and make it universally accessible and useful. Founder Klemen Simonic started it after seeing the difficulty and expense of building accurate speech recognition at Facebook; the initial vision was a self-learning speech AI that could learn from large amounts of unlabeled audio and text, work in real-world conditions, and ultimately support every language.
Business Model
Revenue Model
Usage-based API pricing: customers pay for tokens/audio usage for speech-to-text, text-to-speech, and translation. Soniox also sells subscriptions for the Soniox App, with free and Pro plans.
Pricing Tiers
File/asynchronous transcription; usage-based pricing.
Streaming transcription; usage-based pricing.
Real-time streaming generation.
Smart Scribe, Translator, Voice Typing, mobile/desktop/web access, personal workspace, sharing, offline/online recording, and weekly free credits.
Unlimited Smart Scribe, Translator, and Voice Typing, priority processing, and early feature access.
Target Markets
- Developers and businesses building voice products
- Voice-agent and conversational-AI companies
- Meeting and productivity software
- Call-center and customer-support platforms
- Healthcare, education, automotive, media, and enterprise software
- Individuals and teams using multilingual transcription, translation, and voice typing
- Voice agents and conversational AI
- Voice typing and dictation
- Live meetings, AI notetaking, and conversation intelligence
- Large-scale audio transcription and analytics
- Real-time multilingual translation and captions
- Call centers and customer-support workflows
- LiveKit
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- Pipecat
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