Five capabilities. One continuous surface.
The Koythu studio is not a bundle of tools stitched together. Every capability shares the same voice library, the same tone controls, the same language coverage, and the same API primitives underneath.
Write once. Render everywhere the voice needs to go.
You do not switch between a text to speech tool and a cloning tool and a translation tool. You write a script, pick a voice, adjust tone, choose a language, and generate. Everything else - cloning, API delivery, IVR handoff - is a choice inside the same flow.
Type once. Render in every voice, every tone, every language.
Warm, calm, neutral urban
Deep, formal, broadcast
Bright, expressive, retail
Custom, consented voice
Explore the studio, surface by surface.
Text to speech generation
The core rendering engine - prosody, pacing, emphasis, breath.
OpenVoice cloning
Consented, verified, revocable replication of a real voice.
OpenEmotional tone control
One line, four registers - calm, warm, urgent, formal - as parameters.
OpenMulti language support
Delivery adapts to each language, not translated then read flat.
OpenAPI and integrations
REST endpoints, low latency, IVR and app integration patterns.
OpenWrite, choose, tune, generate - recursive rather than linear.
The script is the surface
Type, paste, or feed a script through the API. Punctuation, ellipses, emphasis markers and line breaks all carry through into how the voice reads the line - a comma is a pause, a full stop is a beat, a question mark lifts.
Voice as a first class object
Every voice in the library carries a persona, a language coverage set, and a set of tone presets that suit it. A cloned voice slots in as a peer, not an afterthought.
Tone is a parameter
Rate, pitch, energy, tone family - all live sliders on the same script. You can render calm and urgent versions of the same line without re typing a word.
Audio, plus everything you need with it
A WAV or MP3, plus timing metadata, phoneme boundaries and language tags. Push it into an IVR, an app, a video, or the API pipeline that generated it.