OpenAI GPT-4o Mini TTS
OpenAI's steerable speech model: ten natural voices you can direct with free-text instructions for tone, accent and pacing.
GPT-4o Mini TTS is a cloud text-to-speech model from OpenAI. It converts written text into natural, spoken audio. It offers a choice of 10 voices. Voices can be tuned for speed. It runs through OpenAI using your own API key, from $0.015 per 1,000 characters.
- Released
- Mar 2025
- Pricing
- $0.015 / 1k chars
- Type
- Text-to-speech
- Voices
- 10 to choose from
- Voice controls
- Speed
OpenAI
OpenAI builds GPT, DALL·E, the Sora family, and the open-weight gpt-oss models, and has been a central force behind the modern wave of generative AI.
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