VUI LABS VOICE API
Turn text into natural speech.
Build voiceovers, product narration, and conversational voice experiences with one project-scoped API key.
01QuickstartCreate an API key, send text, and save your first audio file.02Choose a voiceChoose a voice, speaking rate, output format, and request mode.03Ship with the APIUse synchronous or streaming generation in your product.
What you can build
Voiceovers and narrationProduct demos, videos, stories, and long-form content.
Conversational experiencesGenerate an assistant reply as audio, or stream it as it is produced.
Accessible productsRead content aloud, generate audio notifications, or power phone and IVR flows.
The essentials
- Every request is associated with an API key, project, rate limits, and billing account.
- New accounts receive 10,000 free TTS characters before paid balance is used.
- When playback needs to begin before the complete audio is generated, see the Text to Speech API.
Start with a working request
Do not begin by tuning every optional field. Generate a short line with the default voice first, then make one adjustment at a time.