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Whisper Audio API FAQ
Whisper Audio API FAQ

General questions about the Whisper, speech to text, Audio API

Updated over a week ago

OpenAI's Whisper models have the potential to be used in a wide range of applications, from transcription services to voice assistants and more.

You can get started building with the Whisper API using our speech to text developer guide.

How much does the Whisper ASR API cost to use?

See our Pricing page for details.

Is Whisper still free in the playground?

Starting March 1st, 2023, with the Whisper API launch it is no longer free in the playground.

What languages are supported?

We list the supported languages in the developer guide for Whisper.

What is the rate limit?

Check out the rate limits guide.

How should users expect our rate limits take into account the length of the audio?

Any length of audio is fine as long the size of the input file is less than 25 MB. If your file is longer than 25 MB you can follow our guidance on long inputs.

How is the transcription received - in a streaming style?

It is not streamed.

What file size is supported?

Up to 25MB.

What file formats are supported?

  • m4a

  • mp3

  • webm

  • mp4

  • mpga

  • wav

  • mpeg

Can I send links to audio files instead?

No, you will need to send a file in one of the formats listed above.

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