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

# TTS (Text to Speech)

> Call /audio/speech with the C# SDK.

**Method**: `client.CreateSpeech(...)`

### Example

```csharp theme={null}
using AiStatsSdk;

var client = new AIStats(apiKey);
var response = await client.CreateSpeech(new Dictionary<string, object>
{
    ["model"] = "openai/gpt-4o-mini-tts",
    ["input"] = "Hello world",
    ["voice"] = "alloy",
    ["format"] = "mp3"
});
```

### Key parameters

* `model` (required): TTS-capable model id.
* `input` (required): Text to synthesize.
* `voice`: Voice preset (model-dependent, e.g., `alloy`).
* `format`: `mp3`, `wav`, `flac`, etc.
* `speed`: Playback speed multiplier (typically 0.25–4).

### Returns

Audio binary