Deepgram

1. Getting started

   Deepgram's speech APIs, API keys, and first requests.

2. Models and languages

   Nova and Aura models and language support.

3. Pre-recorded audio transcription

   Transcribing files and URLs with the listen API.

4. Live streaming audio

   Real-time transcription over WebSockets.

5. Audio intelligence and feature options

   Smart format, diarization, keywords, punctuation, and other options.

6. Supported audio formats

   Encodings, sample rates, and containers.

7. Text to speech

   Aura voices and streaming speech synthesis.

8. Voice Agent API

   Building real-time voice agents combining STT, LLM, and TTS.

9. Text intelligence

   Summarization, topic detection, sentiment, and intent analysis.

10. Concurrency and rate limits

    Concurrent request limits and handling 429 errors.

11. Errors

    API error codes and troubleshooting.

12. Deployment options

    Hosted API versus self-hosted and on-premises deployments.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.