Name: TTS-1 | Text-to-Speech API
Brand: OpenAI

Overview

What is TTS-1 API?

TTS-1 is a real-time text-to-speech model optimized for speed. Provides lower latency but at a lower quality than TTS-1 HD.

Technical Specifications
- Supported inputs: Text
- Output: Audio
- Endpoint: /tts

Performance Benchmarks
[embed]

TTS-1 API Pricing
- Input: $19.5 / 1M tokens

Where to Use TTS-1

Voiceovers and narration
Generate natural speech for videos, courses, and IVR at low per-second cost.

Accessibility and voice agents
Add spoken output to apps, readers, and conversational assistants.

Uptime and performance

Uptime (7d): 96.0%

Measured on the AI/ML API gateway across live traffic. Figures are medians unless stated. Last updated 2026-10-12.

Use cases

Voice assistants and chatbots for more engaging, natural interactions
Audiobook and podcast production with AI-generated narration
Accessibility tools for visually impaired users
Interactive voice response (IVR) systems in customer service
Language learning applications with clear and expressive speech output

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How to use TTS-1 | Text-to-Speech API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to openai/tts-1.

import requests

r = requests.post(
    "https://api.aimlapi.com/v1/tts",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "openai/tts-1",
      "text": "Hello from AI/ML API",
      "voice": "alloy"
    },
)
print(r.json()["audio"])  # URL to the generated audio

const r = await fetch("https://api.aimlapi.com/v1/tts", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "openai/tts-1",
    "text": "Hello from AI/ML API",
    "voice": "alloy"
  }),
});
const { audio } = await r.json();
console.log(audio); // URL to the generated audio

curl -X POST https://api.aimlapi.com/v1/tts \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/tts-1","text":"Hello from AI/ML API","voice":"alloy"}'

# the JSON response contains "audio" — a URL to the generated speech

OpenAI-compatible — swap the base URL and it works with your existing SDK.