Changelog

The Free plan’s TTS rate limit no longer caps its burst bucket at the sustained rate. Previously Free was 1 request/second with a bucket capacity of 1, so a second request issued in the same second was rejected with 429. Free now gets a burst capacity of 10, so a normal opening burst of requests (a quickstart script, a first integration test) no longer trips the limiter.

Sustained throughput is unchanged on every tier — burst only smooths the first second of traffic; it does not raise your steady-state rate. This brings /v1/audio/* in line with the burst allowance /v1/agents/* has had since rate and concurrency limits were first published.

See the API limits reference for the full per-plan table.