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

# TTS and STT Vendors

> Explore the cloud-based and on-premises TTS and STT vendors supported by Cognigy Voice Gateway, including AWS, Microsoft, Google, Deepgram, and ElevenLabs.

<a href="/release-notes/2026.4"><Badge className="version-badge" color="blue">Updated in 2026.4</Badge></a>

The table shows the cloud-based and on-premises TTS (Text-to-Speech) and STT (Speech-to-Text) providers supported by Cognigy Voice Gateway.

<table>
  <thead>
    <tr>
      <th rowspan="2">Provider</th>
      <th colspan="2">Cloud-Based</th>
      <th colspan="2">On-Premises</th>
    </tr>

    <tr>
      <th>TTS</th>
      <th>STT</th>
      <th>TTS</th>
      <th>STT</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>AWS</td>
      <td>+</td>
      <td>+</td>
      <td>-</td>
      <td>-</td>
    </tr>

    <tr>
      <td>Deepgram</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
    </tr>

    <tr>
      <td>Deepgram Flux</td>
      <td>-</td>
      <td>+</td>
      <td>-</td>
      <td>-</td>
    </tr>

    <tr>
      <td>ElevenLabs</td>
      <td>+</td>
      <td>+</td>
      <td>-</td>
      <td>-</td>
    </tr>

    <tr>
      <td>Google</td>
      <td>+</td>
      <td>+</td>
      <td>-</td>
      <td>-</td>
    </tr>

    <tr>
      <td>Microsoft</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
    </tr>

    <tr>
      <td>Nuance</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
    </tr>

    <tr>
      <td>Soniox</td>
      <td>-</td>
      <td>+</td>
      <td>-</td>
      <td>-</td>
    </tr>

    <tr>
      <td>Speechmatics<sup><a href="#footnote1">1</a></sup></td>
      <td>+</td>
      <td>+</td>
      <td>-</td>
      <td>-</td>
    </tr>

    <tr>
      <td>Custom</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
      <td>+</td>
    </tr>
  </tbody>
</table>

## More Information

* [Speech Services](/voice-gateway/webapp/speech-services)

***

<span style={{ fontSize: "0.8rem" }}>
  <sup id="footnote1">1</sup> Access to the Speechmatics speech provider in Voice Gateway is behind a feature flag and requires additional configuration. For more information, refer to [Speech Services: Speechmatics](/voice-gateway/webapp/speech-services#speechmatics).
</span>