Grok TTS
by Vercel AI Gateway · family grok · listed Mar 2026
Speech generation model for controllable voice, narration, and audio delivery
Current rates USD per 1M tokens
Input—
Output—
Cache read—
Cache write—
Against the market
On the record
- Model id
spacexai/grok-tts- Context window
- — tokens
- Max output
- —
- Input modalities
- text
- Output modalities
- audio
- Reasoning
- no
- Tool calls
- no
- Open weights
- no
- Knowledge cutoff
- —
- Released
- 2026-03-16
- Last updated
- 2026-03-16