> ## Documentation Index
> Fetch the complete documentation index at: https://docs.telzino.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Voice
> Information on HD Text-to-Speech Voices available for your Telzino phone agent.
The voice configuration option allows you to choose from a variety of high-definition AI Text-to-Speech (TTS) voices for your agent. Selecting the right voice helps ensure that your AI agent communicates effectively and aligns with your brand's identity.
### Available Voice Options
Telzino offers voices from four TTS providers: **Cartesia**, **Minimax**, **Inworld** and **Deepgram Flux**. Every voice picker in the Dashboard and the Connect App draws from one catalogue, and each voice shows its provider beside its name.
The picker groups voices by the agent's **Language** — for a Spanish agent the Spanish voices come first, then everything else — and labels each voice's language. The Language setting controls what the agent says; the accent comes from the voice, so pick a voice marked with the language you want to hear.
#### Cartesia Voices
Cartesia voices are high-quality, customer-service-focused voices optimized for phone conversations.
| Voice Name | Voice ID | Gender |
| - | - | - |
| Katie - Friendly Fixer | `f786b574-daa5-4673-aa0c-cbe3e8534c02` | Female |
| Jacqueline - Reassuring Agent | `9626c31c-bec5-4cca-baa8-f8ba9e84c8bc` | Female |
| Caroline - Southern Guide | `f9836c6e-a0bd-460e-9d3c-f7299fa60f94` | Female |
| Blake - Helpful Agent | `a167e0f3-df7e-4d52-a9c3-f949145efdab` | Male |
| Simi - Support Specialist | `3b554273-4299-48b9-9aaf-eefd438e3941` | Female |
| Tina - Customer Ally | `91b4cf29-5166-44eb-8054-30d40ecc8081` | Female |
| Emma - Customer Care Line | `f6ff7c0c-e396-40a9-a70b-f7607edb6937` | Female |
| Greg - Supporter | `a0e99841-438c-4a64-b679-ae501e7d6091` | Male |
| Grant - Friendly Support | `d46abd1d-2d02-43e8-819f-51fb652c1c61` | Male |
| Janvi - Steady Agent | `7ea5e9c2-b719-4dc3-b870-5ba5f14d31d8` | Female |
| Sameer - Problem Solver | `638efaaa-4d0c-442e-b701-3fae16aad012` | Male |
| Lindsey - Relaxed Rep | `a38e4e85-e815-43ab-acf1-907c4688dd6c` | Female |
| Devansh - Warm Support Agent | `1259b7e3-cb8a-43df-9446-30971a46b8b0` | Male |
| Carson - Friendly Support | `4df027cb-2920-4a1f-8c34-f21529d5c3fe` | Male |
| Priya - Trusted Operator | `f6141af3-5f94-418c-80ed-a45d450e7e2e` | Female |
| Mia - Agent | `1d3ba41a-96e6-44ad-aabb-9817c56caa68` | Female |
| Camille - Friendly Expert | `55deba52-bc73-4481-ab69-9c8831c8a7c3` | Female |
| Darla - Resolution Agent | `996a8b96-4804-46f0-8e05-3fd4ef1a87cd` | Female |
| Ellen - Welcome Agent | `5c9e800f-2a92-4720-969b-99c4ab8fbc87` | Female |
| Barry - Helper | `13524ffb-a918-499a-ae97-c98c7c4408c4` | Male |
| British Lady | `79a125e8-cd45-4c13-8a67-188112f4dd22` | Female |
| Confident British Man | `63ff761f-c1e8-414b-b969-d1833d1c870c` | Male |
| Gemma - Decisive Agent | `62ae83ad-4f6a-430b-af41-a9bede9286ca` | Female |
**Spanish and French Cartesia voices** speak with a native accent and are listed first for agents in that language:
| Voice Name | Voice ID | Language |
| - | - | - |
| Pedro - Formal Speaker | `15d0c2e2-8d29-44c3-be23-d585d5f154a1` | Spanish, male |
| Andres - Trusted Voice | `d46e87a1-7c6d-4b18-9359-926f4a35ffdf` | Spanish, male |
| Fernanda - Friendly Guide | `b4b8e2af-6139-466e-a93a-30c20d2e1fc5` | Spanish, female |
| Pauline - Helpful Companion | `65b25c5d-ff07-4687-a04c-da2f43ef6fa9` | French, female |
| Benoît - Methodical Moderator | `5def377d-908b-4540-8bd7-3c968fcae351` | French (Paris), male |
| Roxane - Problem-Solver | `328e0683-d1a7-4cde-ad46-0ee69a3cbd6a` | French (Canada), female |
| Marc - Conversational Buddy | `ce74c4da-4aee-435d-bc6d-81d1a9367e12` | French (Canada), male |
Cartesia voices run on the **Sonic 3** model by default; the version selector also offers **Sonic 3.6**. Sonic 2 and 3.5 are retired and fold to Sonic 3 on save.
Use the [Preview Voice](/api-reference/voices/preview) endpoint to hear how any Cartesia voice sounds with custom text.
#### Minimax Voices
Minimax voices offer multilingual support with natural-sounding speech. Listen to audio samples below.
| Voice Name | Voice ID | Description | Preview |
| - | - | - | - |
| Radiant (Standard) | `English_radiant_girl` | Energetic Female | |
| Lively (Friendly) | `Lively_Girl` | Bright Female | |
| Professional (Calm) | `Calm_Woman` | Mature Female | |
| Casual (Modern) | `Casual_Guy` | Relaxed Male | |
| Friendly (Neutral) | `Friendly_Person` | Approachable | |
| Persuasive Man | `English_Persuasive_Man` | Persuasive Male | |
#### Inworld Voices
Inworld Realtime TTS voices, with English accents from three regions. The voice ID is the full Inworld string.
| Voice Name | Voice ID |
| - | - |
| Ashley (American Female) | `Inworld.TTS2.Ashley` |
| Blake (American Male) | `Inworld.TTS2.Blake` |
| Brian (American Male) | `Inworld.TTS2.Brian` |
| Callum (Australian Male) | `Inworld.TTS2.Callum` |
| Matilda (Australian Female) | `Inworld.TTS2.Matilda` |
| Olivia (British Female) | `Inworld.TTS2.Olivia` |
#### Deepgram Flux Voices
Thirty-six English voices from Deepgram's Flux text-to-speech, with American, British, Australian, Irish, Indian, Singaporean and Filipino accents. Voice IDs follow the pattern `flux--en`, for example `flux-hannah-en` (Hannah, American female), `flux-colin-en` (Colin, British male) or `flux-meena-en` (Meena, Indian female). Use [List Voices](/api-reference/voices/list) for the full set with each voice's description.
A Partner or Reseller can lock MiniMax, Inworld or Deepgram Flux for an organization through [Feature Administration](/admin-guide/dashboard/feature-administration); locked providers disappear from the voice pickers. Cartesia can never be locked.
### Custom / Cloned Voices
In addition to the built-in catalogue, you can give an agent your **own voice** by cloning it with a short audio sample. Cloned voices are **organization-level** — once created, any agent in your organization can select one.
Custom Voices is an **organization-level feature that must be enabled** for your organization before the management UI appears. When it is disabled, agents already assigned a cloned voice keep using it, but new cloned voices cannot be created or selected.
#### Creating a cloned voice
Cloned voices are **created and managed from the agents list**, not from an individual agent:
* In the **dashboard**, open the **Custom Voices** button on the organization's row.
* In **Connect**, use the **Custom Voices** button on the agents toolbar (it opens the Custom Voices page).
Then choose **Add custom voice** and either:
* **Record** a sample in your browser. Recording is bounded to **10–30 seconds** (it stops automatically at 30 seconds), or
* **Upload** an audio file (`mp3`, `wav`, `flac`, `ogg`, or `webm`, up to **4 MB**).
Give the voice a name, choose its **language**, and confirm the **consent checkbox** — you must have the right and the consent of the person whose voice you are cloning. The language is selectable from Cartesia's full set of supported clone languages (English, French, German, Spanish, Portuguese, Chinese, Japanese, Hindi, Italian, Korean, Dutch, Polish, Russian, Swedish, Turkish, Tagalog, Bulgarian, Romanian, Arabic, Czech, Greek, Finnish, Croatian, Malay, Slovak, Danish, Tamil, Ukrainian, Hungarian, Norwegian, Vietnamese, Bengali, Thai, Hebrew, Georgian, Indonesian, Telugu, Gujarati, Kannada, Malayalam, Marathi, Punjabi). The chosen language is stored with the voice and applied automatically when an agent uses it, so the agent speaks the clone in that language.
The clip is sent to Cartesia, and the resulting voice becomes selectable like any other Cartesia voice. The raw sample is **not stored**; previews are generated on demand.
Cloned voices run on the **`sonic-3`** or **`sonic-3.6`** model (versions **v3 / v3.6**), which cover all clone languages. On an agent, the voice **version selector offers v3 and v3.6**, and the API keeps a cloned `voice_id` on the sonic-3 family: an omitted `voiceSettings.model` counts as `sonic-3`, and a retired `sonic-2` or `sonic-3.5` is saved as `sonic-3`. Speed and `sonic-3` pronunciation overrides work as with built‑in Cartesia voices.
#### Selecting a cloned voice on an agent
On an individual agent, you only **select** an existing cloned voice — it appears in the agent's voice dropdown alongside the built-in voices. Creating and deleting clones happens in the org-level Custom Voices manager described above.
#### Managing cloned voices
In the Custom Voices manager, cloned voices appear with preview and delete controls. Deleting a voice is **blocked while any agent is still using it** — reassign those agents first, then delete. Deleting removes the voice from Cartesia and your organization.
Cloned voices can also be managed via the API — see [Create](/api-reference/custom-voices/create), [List](/api-reference/custom-voices/list), and [Delete](/api-reference/custom-voices/delete).
### How to Configure the Agent's Voice
To select the voice for your AI agent:
1. Navigate to the voice settings in your Telzino agent configuration.
2. Browse the available voice options and listen to samples to choose the one that best fits your needs.
3. Select your preferred voice and save your settings to apply the changes.
### Custom Pronunciations
Some words — company names, place names, surnames — get mispronounced because the TTS
engine has never seen them. You can teach the agent how to say them.
Add the word in the agent's **Pronunciations** editor, type how it should sound
(for example `win` for *Nguyen*), and click **Apply** to turn that into IPA
(International Phonetic Alphabet). Preview it, then save.
Custom pronunciations are available on:
* **Inworld** voices
* **Cartesia** voices on the **`sonic-3`** or **`sonic-3.6`** model
* **MiniMax** voices on **English** agents (MiniMax accepts English phonemes only, so the editor is hidden on Spanish and French MiniMax agents)
They are not available on Cartesia `sonic-2`, which cannot speak phonetic overrides. `sonic-2` is
retired: saving an agent that still uses it moves it to v3 (`sonic-3`).
You enter a pronunciation once and it works on any supported voice — as long as you
created it with **Apply**. Behind the scenes each provider is given the phonemes in the
form it expects, so changing an agent's voice between Cartesia, MiniMax and Inworld
keeps its pronunciations working without re-entering them.
Three cases are skipped rather than applied, with no error:
* Phonemes typed by hand instead of generated with **Apply** work on Cartesia only.
* Pronunciations created for a Spanish or French voice are ignored on MiniMax, which
accepts English phonemes only.
* Multi-word entries (for example "New York") work on Cartesia but are ignored on
MiniMax and Inworld, whose pronunciation syntax covers a single word each.
The pronunciation preview plays through the agent's own voice, so what you hear when
you preview is what callers will hear.
### Tips for Choosing the Right Voice
* **Match Your Brand**: Choose a voice that reflects your brand's personality and tone. For example, an energetic and engaging voice might be suitable for a casual eatery, while a calm and authoritative voice could be ideal for a professional service.
* **Consider Your Audience**: Think about what your customers might prefer. A clear and pleasant voice is generally easier to understand and can be more enjoyable for longer interactions.
* **Test Different Voices**: Don't hesitate to try out several voices to see which one resonates best with your customers and suits various scenarios.
### Important Note
Certain AI TTS voices may not be available when Spanish is selected as the language. Ensure to review the available options under the chosen language settings.
By selecting the appropriate voice for your AI agent, you can enhance customer interactions and ensure that your communication is both effective and aligned with your brand's identity.
This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.