Real-time 210ms Latency
Achieve near-instant response times. The speech-02-hd model is optimized for low-latency text processing, ensuring your conversational AI feels responsive and human.

text
audio
Input
Advanced technical capabilities that make speech-02-hd a leader in the audio generation market.
Achieve near-instant response times. The speech-02-hd model is optimized for low-latency text processing, ensuring your conversational AI feels responsive and human.

The 02 model adds realistic breaths, laughter, and sighs. It transforms flat text into emotionally nuanced speech, achieving a industry-leading 4.62 MOS score.

Replicate any voice with just a 3-second sample. Text Speech 02 maintains the original speaker's timbre and rhythm across all supported languages and text inputs.

Experience superior clarity with 48kHz sampling. This high-definition text to speech output eliminates aliasing, making it ideal for professional dubbing and media.

Getting a speech-02-hd API key takes four steps and a few minutes. Create a free GPTProto account, add credits, generate your key, and make your first call — at $0.0082 it's a cheaper speech-02-hd API key than going direct, and one key works across every model on the platform. Full speech-02-hd Documentation is in the docs.

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