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Documentation Index

Fetch the complete documentation index at: https://assemblyai.com/docs/llms.txt

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The choice depends on your audio source:

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Use Multi-channel when:

You have audio where each speaker is recorded on a separate channel, such as:
  • Twilio calls with configured channel separation
  • Call center software that exports multiple audio channels
  • Any recording where speakers are pre-separated into channels
Multichannel is more accurate since each speaker’s audio is processed independently.
Multichannel audio will not automatically separate multiple speakers on the same channel. If you have multiple speakers on a single channel, speaker labels are required for speaker separation.

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Use Speaker Labels when:

You have single-channel audio with multiple speakers, such as:
  • Standard audio recordings with multiple participants
  • Calls recorded as a single track
  • Any audio where speakers share the same channel
For speaker labels, you can improve accuracy by specifying the expected number of speakers in advance using the speakers_expected parameter, or set a range of possible speakers using the speaker_options parameter.