--- title: xAI | Scenario Docs --- > This page is auto-generated from model configurations. Last updated: 2026-04-09. This reference lists all available **xAI** audio generation models and their parameters. Use these parameter names when calling the [Generation API](/api/postgeneratecustom/index.md). - [xAI Grok TTS](#xai-grok-tts) --- ## xAI Grok TTS Convert text to natural-sounding speech using xAI’s Grok TTS with multiple voices, codecs, and multilingual support including speech tags like \[pause] and \. **Model ID:** `model_xai-grok-tts` **Capabilities:** `txt2audio` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | ------------ | ------ | -------- | ------- | --- | --- | ------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------- | | `text` | string | Yes | - | - | - | - | Text to synthesize. Max 15,000 characters. Supports speech tags like \[pause], \text\ | | `voice` | string | No | `eve` | - | - | `ara`, `eve`, `leo`, `rex`, `sal` | Voice to use for synthesis | | `language` | string | No | `auto` | - | - | `auto`, `ar`, `bn`, `zh`, `en`, `fr`, `de`, `hi`, `id`, `it`, `ja`, `ko`, `pt`, `ru`, `es`, `tr`, `vi` | Language code (BCP-47) or ‘auto’ for automatic detection | | `sampleRate` | number | No | `44100` | - | - | `8000`, `16000`, `22050`, `24000`, `44100`, `48000` | Audio sample rate in Hz |