How do I deploy Kokoro Web on Railway?

You can deploy Kokoro Web on Railway by clicking the "Deploy Now" button on this page. Railway will automatically set up all the necessary services and configurations for you.

What are the system requirements?

Railway handles all the infrastructure requirements. You only need a web browser to deploy and manage your application.

Is this template free to use?

Yes, this template is free to use within your existing Railway account.

Can I customize this template?

Yes, you can fully customize this template. After deployment, you will have full control of what you've deployed in your Railway project.

How do I get support for this template?

You can get support through our community forum: kokoro-web-dc05543c, or join our Discord community for more assistance.

Deploy and Host Kokoro Web on Railway

Kokoro Web is a free, browser-based AI text-to-speech generator powered by the Kokoro-82M model. It creates natural-sounding voices without requiring installation and can be self-hosted to provide an OpenAI-compatible TTS API for your applications.

About Hosting Kokoro Web

Hosting Kokoro Web on Railway gives you a self-hosted text-to-speech service with an OpenAI-compatible API endpoint. The application runs as a web service that can process TTS requests either through a browser interface or via API calls. The underlying Kokoro-82M model, despite being lightweight at 82 million parameters, delivers quality comparable to larger commercial models while being significantly faster and more cost-efficient. The service supports WebGPU acceleration for improved performance, multiple language accents, and various voice customization options.

Common Use Cases

Drop-in replacement for OpenAI's text-to-speech API in existing applications
Generating voiceovers for videos, podcasts, or audio content
Adding voice synthesis capabilities to chatbots and virtual assistants
Creating accessible audio versions of written content
Building voice-enabled applications without per-request API costs

Dependencies for Kokoro Web Hosting

Node.js runtime environment
Kokoro-82M model weights (auto-downloaded on first run)

Deployment Dependencies

Environment Variables

Variable	Description
`KW_SECRET_API_KEY`	API key for authenticating requests to the TTS endpoint

Implementation Details

Kokoro Web provides an OpenAI-compatible API that works as a drop-in replacement:

import fs from "fs";
import path from "path";
import OpenAI from "openai";

const openai = new OpenAI({
  baseURL: 'https://your-kokoro-railway-app.up.railway.app/api/v1',
  apiKey: process.env.KW_SECRET_API_KEY,
});

const speechFile = path.resolve("./speech.mp3");

const mp3 = await openai.audio.speech.create({
  model: "model_q8f16",
  voice: "af_heart",
  input: "Today is a wonderful day to build something people love!",
});

const buffer = Buffer.from(await mp3.arrayBuffer());
await fs.promises.writeFile(speechFile, buffer);

Why Deploy Kokoro Web on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying Kokoro Web on Railway, you are one step closer to supporting a complete full-stack application with minimal burden. Host your servers, databases, AI agents, and more on Railway.