How much does tts-1-hd:free cost per 1M tokens?

Input is priced at $0.00 per 1M tokens, output at $0.00 per 1M tokens. Billing is per token, no rounding to batch sizes.

How do I access tts-1-hd:free via API?

Send requests to the UnoRouter /v1/chat/completions endpoint with model=tts-1-hd:free. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.

OpenAI: tts-1-hd:free

Name: tts-1-hd:free
Brand: OpenAI

tts-1-hd:free

Released Nov 5, 2023Updated Jun 18, 2026

OpenAI's premier high-fidelity audio synthesis model. Compared to the standard version, it is deeply optimized for audio detail, eliminating potential high-frequency artifacts to deliver a richer, more nuanced voice, making it ideal for high-quality offline content creation.

Mode audio_speechDeprecation Dec 2026

All providers for this model are busy right now

Every upstream provider has hit its rate limit. The model comes back automatically once limits lift, usually within hours. Try again in a little while or switch to another model.

Request this model on Discord