GPT-4o Mini TTS

Name: GPT-4o Mini TTS
Author: OpenAI

by OpenAI

OpenAI's newest and most reliable text-to-speech model.

GPT-4o Mini TTS supports prompt-directed delivery for accent, tone, pace, whispering, intonation, and emotional range across OpenAI's expanded voice catalog.

More details

GPT-4o Mini TTS by OpenAI is a fast-speed AI text-to-speech model. GPT-4o Mini TTS supports prompt-directed delivery for accent, tone, pace, whispering, intonation, and emotional range across OpenAI's expanded voice catalog. Key capabilities include 78 voices across 7 languages, up to 4,096 characters per request.

GPT-4o Mini TTS is priced at $0.02 per 1,000 characters of input text. You can generate speech with GPT-4o Mini TTS on idapt.app alongside 200+ AI models in one workspace.

Voices

13 · 1 languages

Any of these voices can be paired with GPT-4o Mini TTS. Pick a model for quality and speed, a voice for character and language.

Alloy

Multilingual · Neutral

Ash

Multilingual · Neutral

Ballad

Multilingual · Neutral

Coral

Multilingual · Neutral

Echo

Multilingual · Male

Fable

Multilingual · Neutral

Onyx

Multilingual · Male

Nova

Multilingual · Female

Sage

Multilingual · Neutral

Shimmer

Multilingual · Female

Verse

Multilingual · Neutral

Marin

Multilingual · Neutral

Cedar

Multilingual · Neutral

Pricing

Cost per 1,000 characters

$0.02

Typical paragraph (~500 chars)

$0.01

Billed on input text length

Capabilities

Speed

Fast: Low-latency, real-time ready

Emotion Control

Natural delivery only

Max Input

4,096 characters per request

Voices

13 voices · 1 languages

Generate speech with GPT-4o Mini TTS View Details

Compare GPT-4o Mini TTS with

Grok Voice TTSxAI

Gemini 3.1 Flash TTS PreviewGoogle AI Studio

Speech 2.8 HDMiniMax

Speech 2.8 TurboMiniMax

Speech 02 HDMiniMax

Frequently Asked Questions

Who created GPT-4o Mini TTS?

GPT-4o Mini TTS was created by OpenAI.

How much does GPT-4o Mini TTS cost?

GPT-4o Mini TTS costs $0.02 per 1,000 characters of input text. A short paragraph of roughly 500 characters costs about $0.01.

How fast is GPT-4o Mini TTS?

GPT-4o Mini TTS is classified as a "fast" speed model. It is tuned for low-latency synthesis, making it well suited to interactive and real-time use.

What voices and languages does GPT-4o Mini TTS support?

GPT-4o Mini TTS supports 78 curated voices spanning 7 languages, including English, Chinese, Korean, Japanese, Spanish, and Portuguese. Every voice in the catalog can be used with this model.

Does GPT-4o Mini TTS support emotion control?

GPT-4o Mini TTS does not expose explicit emotion control. Delivery follows the natural intonation of the selected voice.

How much text can GPT-4o Mini TTS synthesize at once?

GPT-4o Mini TTS accepts up to 4,096 characters of input text per request. Longer documents are split automatically across multiple requests.

How does GPT-4o Mini TTS compare to other TTS models?

GPT-4o Mini TTS is one of several text-to-speech models available on idapt. Compare it with Grok Voice TTS, Gemini 3.1 Flash TTS Preview, Speech 2.8 HD and more on the audio models directory.

Where can I use GPT-4o Mini TTS?

You can generate speech with GPT-4o Mini TTS on idapt.app — in chat via the media tools, in hands-free voice mode, or through the public API. No separate API key required: idapt provides GPT-4o Mini TTS alongside 200+ AI models in one professional workspace.

Generate speech with GPT-4o Mini TTS

Frequently Asked Questions

Who created GPT-4o Mini TTS?

GPT-4o Mini TTS was created by OpenAI.

How much does GPT-4o Mini TTS cost?

GPT-4o Mini TTS costs $0.02 per 1,000 characters of input text. A short paragraph of roughly 500 characters costs about $0.01.

How fast is GPT-4o Mini TTS?

GPT-4o Mini TTS is classified as a "fast" speed model. It is tuned for low-latency synthesis, making it well suited to interactive and real-time use.

What voices and languages does GPT-4o Mini TTS support?

GPT-4o Mini TTS supports 78 curated voices spanning 7 languages, including English, Chinese, Korean, Japanese, Spanish, and Portuguese. Every voice in the catalog can be used with this model.

Does GPT-4o Mini TTS support emotion control?

GPT-4o Mini TTS does not expose explicit emotion control. Delivery follows the natural intonation of the selected voice.

How much text can GPT-4o Mini TTS synthesize at once?

GPT-4o Mini TTS accepts up to 4,096 characters of input text per request. Longer documents are split automatically across multiple requests.

How does GPT-4o Mini TTS compare to other TTS models?

GPT-4o Mini TTS is one of several text-to-speech models available on idapt. Compare it with Grok Voice TTS, Gemini 3.1 Flash TTS Preview, Speech 2.8 HD and more on the audio models directory.

Where can I use GPT-4o Mini TTS?