Gemini Text-to-Speech Is Now Available in Puter.js

Puter.js now supports Gemini Text-to-Speech, giving developers free access to Google's latest TTS models with 30 voices, natural-sounding speech, and style control through natural language instructions.

What is Gemini TTS?

Gemini TTS is Google's text-to-speech offering built on top of the Gemini model family. It supports three models and a wide range of voices, making it easy to find the right combination for your project. Key features include:

• Three models: gemini-2.5-flash-preview-tts, gemini-2.5-pro-preview-tts, and the latest gemini-3.1-flash-tts-preview
• 30 unique voices: From bright and upbeat to firm and informative, each voice has its own character
• Style instructions: Control tone, speed, and mood using plain English instructions
• High-quality output: Natural prosody and expressive speech powered by Gemini

Through Puter.js, you get all of this completely free, no registration required, no API keys.

Examples

Basic text-to-speech

puter.ai.txt2speech("Hello! This is Gemini text-to-speech.", {
    provider: "gemini"
}).then(audio => {
    audio.play();
});

Choose a voice and model

const audio = await puter.ai.txt2speech(
    "Welcome to Puter! Let's build something amazing together.",
    {
        provider: "gemini",
        model: "gemini-2.5-flash-preview-tts",
        voice: "Puck"
    }
);
audio.play();

Style control with instructions

const audio = await puter.ai.txt2speech(
    "Breaking news: Puter.js now supports Gemini TTS.",
    {
        provider: "gemini",
        voice: "Charon",
        instructions: "Speak in a friendly, upbeat tone."
    }
);
audio.play();

Get Started Now

Just add one library to your project:

// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';

Or add one script tag to your HTML:

<script src="https://js.puter.com/v2/"></script>

No API keys and no infrastructure setup. Start building with Gemini TTS immediately.

Learn more:

• Free, Unlimited Text-to-Speech API
• Free, Unlimited Gemini API
• Text-to-Speech API Documentation
• Puter.js Documentation