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

# Add Custom Pronunciation

> Customize how your UponAI agent pronounces specific words using IPA or CMU phonetic dictionaries.

<Warning>
  This feature only works with English agents using ElevenLabs voices that have selected the **eleven turbo v2 (English only)** voice model.
</Warning>

You can control how certain words are pronounced. This is useful for uncommon terms, brand names, or technical words that the TTS model mispronounces by default.

## How It Works

Set a pronunciation dictionary for the agent. Each entry has three fields:

| Field             | Description                       | Example    |
| ----------------- | --------------------------------- | ---------- |
| Word              | The word to be pronounced         | `actually` |
| Phonetic alphabet | `ipa` or `cmu`                    | `ipa`      |
| Pronunciation     | The phonetic spelling of the word | `æktʃuəli` |

## Find Phonetic Pronunciations

Use these tools to look up the phonetic pronunciation of any word:

* [IPA Pronouncing Dictionary Tool](https://www.ipachart.com/)
* [CMU Pronouncing Dictionary Tool](http://www.speech.cs.cmu.edu/cgi-bin/cmudict)