OpenAI TTS-1 HD

OpenAI

Text-to-Speech

OpenAI's high-definition TTS model. Better quality for production use cases.

Try this model View API Docs

Free credits on sign-up

Examples

See what OpenAI TTS-1 HD can generate

Audiobook Passage

Input text:

"The old lighthouse keeper climbed the spiral stairs for the last time. Forty years of storms, shipwrecks, and solitary nights had carved deep lines into his face. But tonight, as the automated beacon flickered to life without him, he felt not relief but an aching emptiness—the sea no longer needed his watchful eyes."

0:04

Product Demo

Input text:

"Introducing AuraSync, the smart home hub that learns your routines. It dims the lights when you start a movie, adjusts the thermostat when you fall asleep, and brews your coffee exactly six minutes before your alarm. Your home, finally as intelligent as you are."

0:04

Try OpenAI TTS-1 HD

Text to speak

Voice

Speed

1.0x

0:00

Get Started

Pricing

Price per Generation

Per generation€1.20

API Integration

Use our OpenAI-compatible API to integrate OpenAI TTS-1 HD into your application.

Install

npm install railwail

JavaScript / TypeScript

import railwail from "railwail";

const rw = railwail("YOUR_API_KEY");

// Simple — just pass a string
const reply = await rw.run("openai-tts-1-hd", "Hello! What can you do?");
console.log(reply);

// With message history
const reply2 = await rw.run("openai-tts-1-hd", [
  { role: "system", content: "You are a helpful assistant." },
  { role: "user", content: "Explain quantum computing simply." },
]);
console.log(reply2);

// Full response with usage info
const res = await rw.chat("openai-tts-1-hd", [
  { role: "user", content: "Hello!" },
], { temperature: 0.7, max_tokens: 500 });
console.log(res.choices[0].message.content);
console.log(res.usage);

Specifications

Avg. latency

4.0s

Est. duration

Provider

OpenAI