Send up to 1000 characters and stream back audio data in 0.3 seconds. The is the endpoint to use for the fastest response.

Use lower values for low bandwidth or to reduce the transferred file size. Use higher values for higher fidelity.

However, on the landing page, we default male voices to 0.92 as people tend to prefer lower/deeper male voices.

0.5: makes the audio 50% faster (i.e. 60-second audio becomes 42 seconds), -0.5: makes the audio 50% slower (i.e. 60-second audio becomes 90 seconds)

minimum Temperature 0.1 maximum Temperature 0.8

This is the text to be synthesized to audio. Up to 1000 characters.

Dan: Young Male, Will: Mature Male, Scarlett: Young Female, Liv: Young Female, Amy: Mature Female

Send up to 3,000 characters and synchronously receive an MP3 and JSON timestamp URLs.

However, on the landing page, we default male voices to 0.92 as people tend to prefer lower/deeper male voices

This is the text to be synthesized to audio. Up to 3,000 characters.

By default, the endpoint returns per-sentence timestamps. Use word to get per-word timestamps. The timestamp feature is currently not supported via the /stream endpoint.

Send up to 500,000 characters and immediately receive a TaskId. GET TaskId to check the status. Optimized for cost savings and longer requests.

A callback URL to POST TaskId and TaskStatus

This is the text to be synthesized to audio. Up to 500,000 characters.

Check the status of a speech synthesis task.


taskId

Unreal Speech

Unreal Speech API

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