voipi - Free text-to-speech for your AI Agents or CLI

Sun, 26 Apr 2026 00:00:00 +0000

voipi lets you quickly convert text-to-speech which you can use in your app for free.

Under the hood, it uses multiple providers. And it is pretty fast as well.

How to get started?

# Speak
npx voipi speak 'Hello world'

# Write to a file
npx voipi speak 'Hi' -o hello.mp3

You can also use it programatically (based on docs)

import { VoiPi } from "voipi";

const voice = new VoiPi();

// Speak text
await voice.speak("Hello world!");

// With a prioritized voice list (first available wins)
await voice.speak("Hello!", { voice: ["Samantha", "en-US-AriaNeural"], rate: 1.5 });

// Save to file
await voice.save("Hello!", "output.mp3");

// Get audio data with duration
const audio = await voice.toAudio("Hello world!");
console.log(`Duration: ${audio.duration}s`);

// List available voices
const voices = await voice.listVoices();

Reference

https://github.com/pithings/voipi

Tts on AI Engineer Guide

voipi - Free text-to-speech for your AI Agents or CLI

How to get started?

Reference