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 278 voices across 12 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

Seed Audio 1.0ByteDance Seed

Grok Voice TTSxAI

Gemini 3.8 Flash TTSGoogle AI Studio

Gemini 3.1 Flash TTS PreviewGoogle AI Studio

Speech 2.8 HDMiniMax

Speech 2.8 TurboMiniMax

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 278 curated voices spanning 12 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 Seed Audio 1.0, Grok Voice TTS, Gemini 3.8 Flash TTS 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 278 curated voices spanning 12 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 Seed Audio 1.0, Grok Voice TTS, Gemini 3.8 Flash TTS and more on the audio models directory.

Where can I use GPT-4o Mini TTS?