> For the complete documentation index, see [llms.txt](https://docs.qolaba.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.qolaba.ai/api-platform/text-to-speech.md).

# Text to Speech

Convert text into lifelike audio using Google's Gemini TTS model. Supports multilingual synthesis, 30 distinct voice personas, and optional style prompting to control tone, pace, and delivery.

### Available Voices

30 voice personas across male and female options with varying pitch and character. Here are some popular picks:

| Voice    | Gender | Pitch        | Character   |
| -------- | ------ | ------------ | ----------- |
| Zephyr   | Female | Higher       | Bright      |
| Puck     | Male   | Middle       | Upbeat      |
| Charon   | Male   | Lower        | Informative |
| Kore     | Female | Middle       | Firm        |
| Aoede    | Female | Middle       | Breezy      |
| Fenrir   | Male   | Lower middle | Excitable   |
| Leda     | Female | Higher       | Youthful    |
| Orus     | Male   | Lower middle | Firm        |
| Achernar | Female | Higher       | Soft        |
| Algieba  | Male   | Lower        | Smooth      |
| Sulafat  | Female | Middle       | Warm        |
| Achird   | Male   | Lower middle | Friendly    |

Use `GET /studio/speech/voices` in the API Playground below to browse all 30 voices.

### Style Prompting

Use the `style_prompt` parameter to control how the voice delivers the text. Write natural-language instructions describing the desired tone.

**Examples:**

* `"Speak in a calm, authoritative news anchor tone"`
* `"Read slowly and dramatically, like an audiobook narrator"`
* `"Sound cheerful and enthusiastic, like a podcast host"`
* `"Whisper softly, as if telling a secret"`

### Multilingual Support

Pass a `language_code` (BCP-47 format) to synthesize speech in a specific language. Use `GET /studio/speech/languages` to retrieve all supported languages.

Common codes: `en-US`, `hi-IN`, `fr-FR`, `es-ES`, `de-DE`, `ja-JP`, `ko-KR`, `zh-CN`, `ar-SA`, `pt-BR`.