TTS-1 HD

OpenAI high-quality text-to-speech model with more natural audio.

Speech: $27.00list $30.00-10%per 1M characters

Context: 4K

30-day uptime: —

Released: 2023-11-06

Text to speechInputTextOutputAudio

This model is being retired

Requests stop working on 2027-01-06.

Providers

This model is served by the dedicated providers below. We pick the provider for each request, so provider preferences don’t apply, including a provider named in your request. Prices in USD per 1M characters. Need a custom setup? Contact [email protected].

DedicatedSpeech$27.00-10%Context4KThis model is served by a dedicated set of providers. We pick the provider for each request, and you pay the same price whichever one serves it.

Included providers1

SuccessTTFT
OpenAIUnited States——

Pricing

Prices for this model. Each request is billed at these prices, whichever provider serves it.

Speech: $27.00list $30.00-10%; per 1M characters

Try it

Runs on your balance and is billed like any API request.

The speech will appear here as a waveform.

Similar models

Other models with the same output types at a similar price.

TTS-1 HDThis model

Speech: $27.00per 1M characters

Gemini 3.8 Flash-Lite TTS

Audio output: $5.40per 1M tokens

Azure TTS-1

Speech: $16.50per 1M characters