Submit Diarization Job

curl --request POST \
  --url https://api.pyannote.ai/v1/diarize \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "url": "https://example.com/audio.wav",
  "webhook": "https://example.com/webhook",
  "numSpeakers": 2,
  "confidence": true
}'

{
  "jobId": "3c8a89a5-dcc6-4edb-a75d-ffd64739674d",
  "status": "created"
}

This endpoint allows you to create a new diarization from a remote audio URL.

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Diarize a remote file (from a URL)

If you have a media file accessible via a URL, you can provide the URL to the file in the request body.

Typically you would use this method with a file stored in a cloud storage service such as Amazon S3. If bucket or object is private, you can follow this tutorial and create a signed url to give temporary access.

For performance reasons, the input audio must respect the following limits:

• Maximum duration of 24hs
• Maximum file size of 1GiB

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Diarization of a Local File

If you have a media file stored locally, you can upload it to our temporary media storage and provide the URL to the file in the request body.

Typically you would use this method if you have a file stored on a local machine or device.

Follow the How to upload files tutorial to upload your file.

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Number of speakers

By default, pyannoteAI will automatically detect the number of speakers present in the input audio, and there is no limit as to how many speakers can be detected.

It is common to diarize audio where the number of speakers is already known to be 2 (e.g. phone conversations or interviews). If this is your use case, you can add "numSpeakers": 2 to the body of your request. This will detect exactly 2 speakers, which typically results in better overall diarization performance.

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Confidence Scores

Confidence scores provide a measure of the certainty of the diarization model in its predictions. These scores range from 0 to 100, with higher values indicating greater confidence.

To include confidence scores in your diarization results, add "confidence": true to your request body. When enabled, the job output will include:

• The confidence object containing:
  • score, an array with the confidence score for each sample
  • resolution, indicating the time interval in seconds between confidence score samples

For example, if the resolution is 0.02, it means each confidence score represents a 20-millisecond interval in the audio.

Confidence scores can be particularly useful for:

• Identifying segments where the model is less certain, which may benefit from manual review
• Filtering results based on a confidence threshold for higher accuracy
• Analyzing the overall reliability of the diarization for a given audio file

By default, confidence scores are not included in the output. To enable them, you must explicitly set "confidence": true in your request.

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Getting results using a webhook

If the optional webhook param is set, the results will be sent to the provided URL. The webhook URL is where any update related to the identification job will be sent. The voiceprint will be sent as a JSON object in the request body.

Please visit the Receiving webhooks documentation for more information.

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Polling for job results

As an alternative to webhooks, you can poll the get job endpoint to retrieve job results.

To poll for job results, use the status field in the job response to check if the job is completed. Once the job is completed, you can retrieve the job results by accessing the output field.

A job is completed when the status field is either succeeded, failed, or canceled.