Agent demo

Web demo

Enter your API key to try the demo, or adjust any settings you want before you start.

Idle.

API key

System prompt preset

Call configuration

Max duration

Time exceeded message

Call mode LLM + STT/TTS Realtime (UltraVox)

Greeting behavior

First speaker

Send greeting on connect

Sends the greeting text when the agent speaks first. Default: “Hi there, thanks for calling—how can I help today?”

LLM settings

LLM model

Temperature

STT provider

Deepgram model Language

TTS provider

Rhyme model Rhyme voice speedAlpha reduceLatency

Recording & detection Recording enabled Turn detection

Voice activity detection (Silero)

activation_threshold min_speech_duration min_silence_duration prefix_padding_duration max_buffered_speech sample_rate

Call activity

Live transcript

Remote mix

Idle

-∞ dB

Input

Idle

-∞ dB