OpenAI API exposes TTS-1 HD through model ID tts-1-hd. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.
Last refreshed 2026-06-07. Next refresh: weekly.
Quick Start
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Code Examples
Install
pip install openaiAPI key
OPENAI_API_KEYModel ID
tts-1-hdUse the model slug directly, e.g. "gpt-4o" or "gpt-4.1-mini".
import os
from openai import OpenAI
client = OpenAI() # reads OPENAI_API_KEY from env
response = client.chat.completions.create(
model="tts-1-hd",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Pricing on OpenAI API
| Type | Price (per 1M) |
|---|---|
| Input tokens | $30.00 |
Capabilities
Audio
About TTS-1 HD
TTS-1 HD is OpenAI's high-quality text-to-speech model, optimized for audio quality over speed, released at DevDay November 2023. Uses the same 6 preset voices as TTS-1 but produces noticeably better audio fidelity at twice the per-character cost. Accepts text up to 4,096 characters. Priced at $30.00/1M characters. API ID: tts-1-hd.
Model Specs
Released2023-11-06
ArchitectureAudio / Speech