OpenAI TTS HD

tts-1-hd

tts-1-hd

High definition text-to-speech model with superior quality

Approx. Price

$51.00 per 1M characters

Model Type

text-to-speech

Available voices

Built-in voices accepted by NanoGPT for this model. Custom or cloned voice IDs may also be supported.

alloy

ash

coral

echo

fable

onyx

nova

sage

shimmer

Compare OpenAI TTS HD with similar models from the same provider or model family.

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Latest snapshot of GPT-4o Mini TTS with voice instructions support

GPT-4o Mini Transcribe

OpenAI's efficient speech-to-text model with improved accuracy over Whisper

GPT-4o Mini Transcribe (2025-03-20)

Original release snapshot of GPT-4o Mini Transcribe