How much does tts-1: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:free via API?

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

OpenAI: tts-1:free

Name: tts-1:free
Brand: OpenAI

tts-1:free

Released Nov 5, 2023Updated Jun 18, 2026

OpenAI's standard text-to-speech model optimized for low latency and real-time applications. It converts text into natural-sounding human speech. While slightly less detailed than tts-1-hd, its rapid response time makes it ideal for real-time dialogue and interactive assistants.

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