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

# Overview

> Access STT models from multiple providers through a single platform. The execution layer routes each request based on language, accent, noise, and cost.

For the full, current list, see [Speech-to-Text Models](https://slng.mintlify.site/models/stt.md).

## Which approach should you use?

| I need to... | Use |
| - | - |
| Transcribe pre-recorded audio files | [HTTP](https://slng.mintlify.site/examples/stt-http.md) |
| Transcribe in real time from a microphone or call | [WebSocket Streaming](https://slng.mintlify.site/examples/stt-websocket.md) |
| Process large volumes of recordings asynchronously | [Batch Transcription](https://slng.mintlify.site/batch-guide.md) |

## Which model should you use?

| I need... | Recommended model | Why |
| - | - | - |
| Lowest latency for English voice agents | Deepgram Nova 3 (SLNG-hosted) | Deployed on SLNG infrastructure |
| Hindi transcription | Deepgram Nova 3 Hindi (SLNG-hosted) | Dedicated Hindi model in AP South |
| Broadest language coverage | Soniox | Wide multi-language support |
| Medical terminology | Deepgram Nova 3 Medical | Specialized medical vocabulary |
| Indian languages | Sarvam AI Saaras | Domain-aware recognition for Indian languages |
| European languages | Reson8 STT | Dutch, French, German, Spanish, and more |

## Quick example

```bash theme={null}
curl https://api.slng.ai/v1/stt/slng/deepgram/nova:3 \
  -H "Authorization: Bearer SLNG_API_KEY" \
  -F "audio=@recording.wav" \
  -F "language=en"
```

Response:

```json theme={null}
{
  "text": "Hello, how can I help you today?",
  "confidence": 0.97,
  "duration": 2.5,
  "language": "en"
}
```

See [HTTP](https://slng.mintlify.site/examples/stt-http.md) for complete examples in cURL, JavaScript, and Python, and [WebSocket Streaming](https://slng.mintlify.site/examples/stt-websocket.md) for real-time transcription.


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