TTS-1 HD

Name: TTS-1 HD
Author: OpenAI

ttsdeprecatedproprietary

Status: Deprecated · Succeeded by gpt-realtime-2.1-mini

Intelligence

Speed

Input price

$30/1M tokens

Output price

—

Capabilities

Show unsupported (13)

No supported capabilities recorded.

Model IDtts-1-hd

ProviderOpenAI

Creatoropenai

Familytts

Licenseproprietary

Statusdeprecated

Typetts

Input modalitiestext

Output modalitiesspeech

Open weightNo

Parameters—

Architecture—

Max chars—

Sample rate—

Voices—

Languages—

Release date—

Deprecation date2026-10-01

Retirement date2027-01-06

Sourceofficial

SpeechPOST

Convert text to spoken audiohttps://api.openai.com/v1/audio/speech

Text tokensPer 1M tokens

	Input	Cached input	Output
Standard	$30	—	—

PricingPer 1M tokens

	Use case	Cost
Standard	—	$30

Model	Max chars	Sample rate	Voices	Languages	Pricing
TTS-1	—	—	—	—	$15—
TTS-1 HD	—	—	—	—	$30—

GET/v1/models/openai/tts-1-hd