Text to Speech

Text to Speech generates spoken audio from a string. Choose a voice, speed, model, and file format, then connect the resulting file to storage, email, or another media action.

Inputs

Input	Type	Required	Description
Third-party account	OpenAI account	Yes	The API key used for synthesis.
Text	String	Yes	The content to speak.
Model	Enum	Yes	TTS-1, TTS-1 HD, or GPT-4o Mini TTS. Defaults to TTS-1.
Voice	Enum	Yes	Alloy, Ash, Ballad, Coral, Echo, Fable, Onyx, Nova, Sage, Shimmer, or Verse.
Speed	Number	No	From `0.25×` to `4×`. Defaults to `1×`.
Response Format	Enum	Yes	MP3, Opus, AAC, FLAC, or PCM. Defaults to MP3.
Instructions	String	No	Delivery direction available only for GPT-4o Mini TTS.

Example instructions:

Speak warmly and clearly, with a brief pause after each sentence.

Output

Output	Type	Description
Audio	File	The generated audio, named from the first part of the input text.

Use TTS-1 for a general-purpose result, TTS-1 HD when fidelity matters more, or GPT-4o Mini TTS when you need explicit delivery instructions.

ChatGenerate a text response with a Google Gemini model.

Overview

Fundamentals

Web, Files & Data

AI

Scraping & Rendering

Google Workspace

Email, CRM & Scheduling

Databases & Tables

Microsoft

Inputs

Output

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​Output

Inputs

Output