Grok Voice Think Fast 2.0
xAI speech-to-speech voice model with improved intelligence, transcription accuracy and conversational capabilities.
Specs
- Context
- —
- Max output
- —
- Input price
- —
- Output price
- —
- Released
- 2026-07-29
Context
- Not published
Pricing
- Not published
Modalities
- Input
- TextAudio
- Output
- TextAudio
API
- API types
Reasoning
- Not published
Info
- Status
- Active
- Released
- 2026-07-29
- Knowledge cutoff
- —
Features
- Confirmed
How to call
1 provider
xaimodel = grok-voice-think-fast-2.0
realtime
GEThttps://api.x.ai/v1/realtime
JSON
Standard format
{
"id": "grok-voice-think-fast-2.0",
"object": "model",
"created": 1785283200,
"owned_by": "xai",
"name": "Grok Voice Think Fast 2.0",
"api": {
"types": [
"realtime"
]
},
"limits": {
"context": null,
"input": null,
"output": null
},
"modalities": {
"input": [
"text",
"audio"
],
"output": [
"text",
"audio"
]
},
"reasoning": {
"supported": null,
"efforts": []
},
"pricing": null,
"features": [
"tools"
],
"info": {
"status": "active",
"release_date": "2026-07-29",
"knowledge_cutoff": null,
"description": "xAI speech-to-speech voice model with improved intelligence, transcription accuracy and conversational capabilities.",
"docs": "https://docs.x.ai/developers/models/grok-voice-think-fast-2.0",
"verified_at": "2026-10-11"
}
}Official sources
4