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OpenAI: TTS-1 HDWork with me

OpenAI: TTS-1 HD

byOpenAI

TTS-1 HD is a text to speech model from OpenAI released on Nov 6, 2023. It reads text and writes audio.

Modalities
In / out price
n/a
Context
n/a
Max output
n/a
Released
Nov 6, 2023
Knowledge cutoff
n/a
  • Tool calling
  • Structured output
  • Reasoning
  • Prompt caching
  • Open weights
  • Free to use

Supported request parameters

What you can set when you call TTS-1 HD through an OpenAI compatible API.

  • Temperaturetemperature

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    by openaiSep 22, 2026$2/M input tokens$10/M output tokens27 providers

  • GPT 6 Sol Pro

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    by openaiSep 22, 2026$2/M input tokens$10/M output tokens2 providers

All OpenAI models

TTS-1 HD questions

Is TTS-1 HD open source?

No. OpenAI serves it through an API only, so you cannot download the weights or host it yourself.

When was TTS-1 HD released?

Nov 6, 2023.

Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.

Building on TTS-1 HD?

I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.

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