Convert text into spoken audio with a single API call. The API supports a rich set of expressive voices, inline speech tags for fine-grained delivery control, and output formats from high-fidelity MP3 to telephony-optimized μ-law.
Details
| Field | Value |
|---|---|
| id | x-ai/grok-voice-tts-1.0 |
| modality | text->audio |
| context_length | 15000 |
| max_output_tokens | 15000 |
| release_date | 2026-07-31 |
| is_open_weights | no |
| supports_tool_call | no |
| supports_reasoning | no |
| supports_structured_output | no |
| supports_attachment | no |
| input_modalities | text |
| output_modalities | audio |