First-party voice studio

Give your words
a real voice.

Write with instant on-device typeahead, audition distinct voices, and generate production-ready speech with Text Generator or metered App.nz models.

Local autocompleteDrafts stay in your browserFour speech routes

Route readyOpenAI compatible

Default routeKokoro · af_nicole

POST /api/v1/generate_speech

Write the scriptAutocomplete runs against a local frequency index.

Choose a routeSwitch models without rebuilding the request.

Text GeneratorKokoroFast English speech Text GeneratorSupertonicMultilingual speech App.nzApp.nz TTS$0.10 / audio min App.nzPocket TTS$0.06 / audio min

Voice Language Speed 1.0×

Copy-ready API

The same voice, in your app.

The code updates with the selected route. Text Generator uses your account secret; App.nz models use its metered gateway key.

Text Generator