# Grok Voice TTS 1.0 Usage, Cost & Rank | OpenCode Data

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.

- Page: https://opencode.ai/data/xai/grok-voice-tts-1-0
- JSON: https://opencode.ai/data/xai/grok-voice-tts-1-0.json
- Model ID: xai/grok-voice-tts-1.0
- Lab: xAI

## Model facts

| Fact | Value |
| --- | --- |
| Context window | 15K |
| Max output | 15K |
| Knowledge cutoff | - |
| Release date | 2026-07-31 |
| Input modalities | text |
| Output modalities | audio |
| Reasoning | No |
| Tool calling | No |
| Open weights | No |

## Methodology

- Updates: Aggregated every hour. Days and weeks use UTC.
- Tokens: Input, output, reasoning, and cached tokens for each request.
- Users and sessions: Approximate counts of distinct users and OpenCode sessions.
- Cost: Session cost is the average cost per OpenCode session. Token prices are list prices from the OpenCode model catalog.
- Retention: The share of a model's users in one week who use it again the next week.
- Citation: Cite OpenCode Data (opencode.ai/data) with the update time shown at the top of the page.