Build with Yoob.
One account, one API key, one balance for the voice APIs and the avatar SDK. Start on the Free plan, then move to a paid plan when you ship.
REST and WebSocket
Voice APIs
Speech, transcription with emotion and sounds, live voice agents and human-or-AI checks. OpenAI-compatible where there is an OpenAI shape.
- Text to speechOvertone
- Speech to textUndertone
- Voice agentsDuotone
- AI voice detectionTruetone
- API referenceEvery endpoint
iOS and web
Avatar SDK
Talking characters drawn on your user’s own device and lip-synced to any voice: ours, or the one your app already uses.
- QuickstartWeb and iOS
- Characters15 presets
- Device checkWill it run here?
- SecurityWhat leaves the device
One call to make it speak
Put your key in YOOB_API_KEY and run this.
curl https://tts-api.yoob.com/v1/audio/speech \
-H "Authorization: Bearer $YOOB_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "yoob-tts-1", "voice": "w1243",
"input": "[joy] You made it! [laughing] I knew you would."}' \
--output hello.mp3