Murf AI

Murf AI is a text-to-speech plugin. It turns the LLM’s reply into audio the caller hears, using Murf AI’s real-time Falcon model or studio-grade Gen2 model across 150+ voices and 35+ languages.

Setup

Set your Murf AI API key in the worker environment. Generate a key from the Murf AI site:

export MURFAI_API_KEY=<key>

Usage

Import the plugin and pass it to the pipeline’s tts slot.

Python

from zrt.plugins import MurfAITTS

tts = MurfAITTS()

# Pipeline(tts=tts, ...)

Parameters

Parameter	Type	Default	Description
`api_key`	`str \| None`	`None`	Murf API key. Falls back to the `MURFAI_API_KEY` environment variable when unset.
`voice`	`str`	`"en-US-natalie"`	Murf `voiceId` (e.g. `"en-US-natalie"`) or the voice actor name (e.g. `"natalie"`).
`model`	`str`	`"Falcon"`	Synthesis model - `"Falcon"` (low-latency, real-time conversational) or `"Gen2"` (most realistic).
`sample_rate`	`int`	`24000`	Output audio sample rate, in Hz.

Spoken replies support interruptions. When the caller talks over the agent, the runtime stops the audio and listens again. See the plugin overview for how TTS fits into the rest of the pipeline.

Camb AI Inworld AI

Plugins

Inference Gateway

Speech-to-text

LLM

Text-to-speech

Realtime models

Avatars

Turn detection

Voice activity detection

Noise cancellation

Setup

Usage

Parameters

​Setup

​Usage

​Parameters

Setup

Usage

Parameters