> ## Documentation Index
> Fetch the complete documentation index at: https://assemblyai.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Speech Understanding

> Extract structured insights from audio with Speech Understanding models.

Speech Understanding models analyze your transcripts to extract meaningful information like speaker identities, sentiment, topics, and summaries.

<CardGroup cols={2}>
  <Card title="Auto Chapters" icon="book-open" href="/speech-understanding/auto-chapters">
    Automatically segment your transcript into chapters with summaries.
  </Card>

  <Card title="Custom Formatting" icon="pen-ruler" href="/speech-understanding/custom-formatting">
    Customize how your transcript text is formatted.
  </Card>

  <Card title="Entity Detection" icon="magnifying-glass" href="/speech-understanding/entity-detection">
    Detect and classify entities like names, locations, and organizations in
    your transcripts.
  </Card>

  <Card title="Key Phrases" icon="key" href="/speech-understanding/key-phrases">
    Extract the most important phrases and words from your transcript.
  </Card>

  <Card title="Sentiment Analysis" icon="face-smile" href="/speech-understanding/sentiment-analysis">
    Detect the sentiment of each sentence in your transcript.
  </Card>

  <Card title="Speaker Identification" icon="users" href="/speech-understanding/speaker-identification">
    Identify and label speakers in your audio to attribute speech to the correct
    person.
  </Card>

  <Card title="Summarization" icon="file-lines" href="/speech-understanding/summarization">
    Generate summaries of your transcripts in different formats.
  </Card>

  <Card title="Topic Detection" icon="tags" href="/speech-understanding/topic-detection">
    Detect topics discussed in your audio using the IAB taxonomy.
  </Card>

  <Card title="Translation" icon="language" href="/speech-understanding/translation">
    Translate transcripts into other languages.
  </Card>
</CardGroup>