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

# ElevenLabs v4

> ElevenLabs' most expressive speech model: 90+ languages, stronger voice likeness, and natural-language audio tags (e.g.

ElevenLabs' most expressive speech model: 90+ languages, stronger voice likeness, and natural-language audio tags (e.g. \[laughs], \[said quietly, relieved]). Multi-speaker scripts are performed as one conversation.

| | |
| - | - |
| Model id | `eleven_v4` |
| Media | audio |
| Submit to | `POST /v1/audio` |
| Price | 0.00846 credits per\_character before discounts |
| Typical time | about 5.0 s |

## Request

**Required:** `text`\
**Optional:** `similarity_boost`, `stability`, `voice_name`

```json theme={null}
{
  "model": "eleven_v4",
  "text": "[softly] [worried] Hamara shaadi ka video... ab kya hoga.",
  "similarity_boost": 0.75,
  "stability": 0.5,
  "voice_name": "Sarah"
}
```

| Field | Allowed | Default |
| - | - | - |
| `similarity_boost` | 0.0 – 1.0 | `0.75` |
| `stability` | 0.0 – 1.0 | `0.5` |
| `voice_name` | `Roger`, `Sarah`, `Laura`, `Charlie`, `George`, `Callum`, `River`, `Harry`, `Liam`, `Alice`, `Matilda`, `Will` … | `"Sarah"` |

Reference inputs take asset ids from [`POST /v1/uploads`](/uploads) or an earlier output's `asset_id`.
Prices and allowed values come from the live catalog; `GET /v1/models/eleven_v4` is always current.


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