Soniox

Soniox is a multilingual speech AI platform that gives developers speech to text, text to speech, and real time translation through one unified API. The homepage says the platform powers products in more than sixty languages, and positions it for real time applications where accuracy across languages, seamless language switching, handling of numbers and names, and low latency interaction matter more than an English first design. Speech to text is the first pillar. The homepage FAQ says it transcribes speech in real time across its supported languages, word by word as it is spoken, handles speakers who switch languages mid sentence without manual configuration, separates and identifies speakers in fast moving conversations, and captures alphanumerics such as phone numbers and reference IDs exactly as spoken. Translation is built into speech to text rather than sold as a separate service: the same real time API call returns the transcript and the translation as the speaker talks, without waiting for sentence boundaries. One way translation renders any supported language into one target language for live captions, meetings, and broadcasts, while two way translation works between two languages so both sides of a conversation can speak naturally. Text to speech and voice cloning form the second pillar. The homepage FAQ says text to speech generates high fidelity speech in its supported languages with emotional expressiveness, streams generated speech before the sentence is finished for voice agents, and syncs text with audio using character level timestamps. Every voice speaks all supported languages, so one voice can carry a product across markets. Voice cloning works by uploading a clean short reference clip through the Soniox Console or API, receiving a voice ID that is used exactly like a built in voice, and using that cloned voice across all supported languages. Privacy and compliance are built into the positioning: the homepage states that audio stays in memory and is processed in real time, and lists SOC 2 Type 2, ISO and IEC 27001 2022, HIPAA, and GDPR compliance, with use in privacy sensitive settings such as healthcare and enterprise. Pricing is usage based and described qualitatively here from the pricing page. Customers pay only for what they use, calculated on a token basis, with separate treatment for asynchronous file transcription and real time streaming, and with translation, speaker diarization, language identification, and smart formatting bundled rather than charged as add ons, according to the pricing page FAQ. Text to speech is also token based, covering the text input and the generated audio. Teams should test accuracy on their hardest real conversations during evaluation.