Voice Platforms
Voices are sourced from two industry-leading providers:Cartesia
Ultra-low-latency voice synthesis with expressive, professional voices. Features real-time generation, speed control, and advanced audio capabilities.
ElevenLabs
Natural-sounding voices with a wide selection of accents, styles, and personalities. A trusted choice for conversational AI.
Saved Tab
Your personal voice library. Voices you have previously saved appear here, grouped by language. The active voice’s language group is pinned to the top, and the active voice itself is highlighted within it.How voice connection works
How voice connection works
Most workspaces connect their own ElevenLabs account to access voices. See BYOK & Management for details on managing your integration. A small number of enterprise workspaces use Thoughtly’s built-in voice set instead and see 13 default English voices labeled Built-in.
| Element | What it does |
|---|---|
| Voice row | Shows avatar, name, platform, gender, and cost multiplier |
| Play / Pause | Instantly preview the voice audio |
| Bookmark (filled) | Remove the voice from your Saved library |
| Clone a voice | Opens the Clone Voice modal (record or upload) |
| Filter | Click the search icon in the header to filter saved voices by name, language, accent, or description |
Explore Tab
The Explore tab inside the Agent Builder’s Voice Selector gives you access to thousands of professional voices from Cartesia and ElevenLabs. The Expressive toggle is enabled by default, prioritizing low-latency, expressive voices. Toggle it off to browse the full catalog across both platforms. You can search, filter, preview, and save, all without leaving the agent you’re editing.
Filter Chips
| Filter | Behavior |
|---|---|
| Expressive | Enabled by default. Prioritizes low-latency, expressive voices optimized for real-time conversations. Toggle off to browse the full catalog across all platforms. |
| Gender | Select Male or Female to narrow results. |
| Language | Choose from 15 languages (with flag icons): English, Spanish, French, German, Portuguese, Italian, Japanese, Korean, Chinese, Hindi, Arabic, Polish, Dutch, Russian, Turkish. |
Text Search
Click the search icon (🔍) in the panel header to open a search bar. Type a voice name or keyword and results update automatically as you type. When no results match, a Clear filters link appears. Clicking it resets the Gender filter, Language filter, and search text. The Expressive toggle is separate and must be toggled off manually if you want to broaden results further.Previewing Voices
Every voice row shows a Play button on hover. Click it to hear a sample. Click again (or click Pause) to stop. Only one preview plays at a time. Starting a new preview automatically stops the previous one.
Saving and Assigning a Voice
There are two ways to use a voice from Explore: Click to Save + Assign (Recommended) Click anywhere on a voice row. Thoughtly will:- Save the voice to your workspace library (if not already saved)
- Assign it to the current agent
- Close the Voice Selector and return you to the agent sidebar
Voice availability depends on the vendor and can occasionally change. If a voice you rely on becomes unavailable, contact our support team and we will help you find a replacement.