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

# Deepgram

> Deepgram speech recognition — the Nova model line for fast, high-throughput transcription, with flexible cloud, on-premises, and hybrid deployment.

**Deepgram** builds voice AI models for both directions of the pipeline: speech recognition through its **Nova** line and speech synthesis through **Aura**. The company's emphasis throughout is throughput and latency rather than maximum accuracy on difficult audio.

<Info>
  In Ollang Workflows, Deepgram is available as a **text-to-speech** provider (`deepgram`). See [Deepgram Aura Text-to-Speech](/apis/tts-apis/deepgram-aura). This page documents the speech recognition side for reference; Ollang's transcription providers are listed in the [Speech-to-Text catalog](/providers/speech-to-text).
</Info>

## Model and coverage

| | |
| - | - |
| **STT model line** | Nova (Nova-2, Nova-3) |
| **Languages** | 30+ languages and dialects |
| **Modes** | Batch and real-time streaming |
| **Deployment** | Cloud, on-premises, or hybrid |

Deepgram's advantage is throughput and latency rather than accuracy on mixed-language audio, where AssemblyAI's Universal-3.5 Pro and ElevenLabs Scribe v2 are the stronger documented options.

## Key capabilities

* **Real-time processing** with low latency, built for live captioning and voice agents.
* **Custom model training** on domain vocabularies where standard models under-perform.
* **Flexible deployment** across cloud, on-premises, and hybrid, for privacy and residency requirements.
* **GPU-based inference** enabling high parallelism relative to CPU-bound alternatives.

## Reference

* [Deepgram Aura Text-to-Speech](/apis/tts-apis/deepgram-aura)
* [Speech-to-Text provider catalog](/providers/speech-to-text)
* [Deepgram documentation](https://developers.deepgram.com/)


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.