Multilingual AI
Work across languages for transcription, translation, generation, and multilingual voice delivery.
150 credits per 100 characters of translated text
- A 1.5× premium over base Text to Speech, plus 60 credits per 1,000 characters for the translation itself.
- 17 of the catalogued languages are renderable today; the rest are listed but not yet available.
What it looks like
Listen
Every clip below is the same sentence, generated by SonicVox — so what changes between them is the voice, not the writing.
“SonicVox turns your script into natural speech — with the pacing, emphasis, and character you would expect from a studio recording.”
Emma Carter — English
A neutral English read, the kind most narration and product walkthroughs start from.
Marcus Grand — English
A deeper English delivery — the same sentence, so you are comparing voice rather than writing.
So-young Kim — Korean voice
A non-English voice reading the same line, to hear accent carry across the identical script.
Speech engines
Five engines, one API. Pick by what the job needs — the closest voice match, the widest language coverage, or the lowest latency.
Signature
DefaultMost natural — best voice match
Our flagship engine. The most natural-sounding speech with the closest match to your selected voice. Best for narration, ads, and any premium read in 10 major languages.
- Languages
- 10
- Cloned voices
- Yes
- Streaming
- No
en, zh, ja, ko, de, fr, ru, pt, es, it
Studio
Ultra-realistic, expressive
Our newest studio-grade engine — ultra-realistic clones with an expressiveness dial, in 23 languages. Great when you want maximum realism and a touch of drama.
- Languages
- 23
- Cloned voices
- Yes
- Streaming
- No
ar, da, de, el, en, es, fi, fr, he, hi, it, ja, ko, ms, nl, no, pl, pt, ru, sv, sw, tr, zh
Expressive
Lively, dynamic delivery
An expressive engine with naturally dynamic intonation and pacing — a characterful alternative to Signature for narration and dramatic reads. Multilingual.
- Languages
- 16
- Cloned voices
- Yes
- Streaming
- No
- Emotion
- Yes
de, el, en, es, fi, fr, hu, it, ja, ko, nl, pl, pt, ru, tr, zh
Multilingual
30+ languages, incl. Urdu, Hindi, Arabic
The broadest language coverage — 30+ languages and dialects, including ones the other engines can't speak. Renders a designed voice from its written description rather than from a recording, so it can't reproduce a cloned voice. Best for global content.
- Languages
- 30+
- Cloned voices
- From a description
- Streaming
- No
Classic
Fast streaming clone
A fast, lightweight clone engine with low-latency streaming. Mirrors your reference's pacing. Best for quick drafts and real-time use.
- Languages
- 5
- Cloned voices
- Yes
- Streaming
- Yes
en, zh, ja, ko, yue
Key facts
- Streaming: Classic only
- The low-latency endpoints are backed by one engine; the others render a whole take before returning.
- Cloned voices: 4 of 5 engines
- An engine that renders from a written description cannot reproduce a recording-based clone.
Overview
Multilingual AI is the umbrella workflow for language-aware generation. It is the right starting point when your inputs, outputs, or audiences span multiple locales.
Quickstart
Choose the language path
Identify the source and target languages before starting the job.
Select the voice strategy
Choose whether to keep a neutral narrator, use a cloned voice, or create translated takes for multiple audiences.
Generate and validate
Review pronunciation, terminology, and pacing across every target language.
Best practices
- Lock brand terminology before generating at scale.
- Validate each language with native review for customer-facing content.