TTS-1
OpenAI · Text to speech · openai/tts-1
Text to speech streaming
The low-latency classic. Superseded by gpt-4o-mini-tts at the same price.
What it costs
The per-minute figure converts the per-character price at 900 characters a minute — the same assumption the app makes. Prices are ballpark, pay-as-you-go, mid-tier — they move constantly. Last checked 2026-07-29.
How it performs
A blank cell means the row does not state it, not that the answer is no. Word-error rates come from one independent harness, so they compare with each other only.
Using it
Runs on the supplier's API, on your own key. You bring the supplier's key and pay their rates directly.
These are not AI-token prices, and these engines do not answer at the hosted endpoints — 00 speaks to them from your machine, with your credentials. The speech models that do run on AI tokens are one click away on the media page.
Pick it per agent in the app. Get 00.
Subscribe to new models