Grok Voice Models by xAI
1 model2026
Details
ResearcherxAI
LicenseProprietary
Commercial useCommercial use with conditions
Models1
Released2026
Capabilities
MultimodalAll models
ReasoningAll models
Function CallingAll models
Tool UseAll models
Structured OutputsAll models
Links
WebsiteAbout
xAI's Grok Voice family of full-duplex voice agent models for enterprise workflows. Designed for complex, multi-step customer support, sales, and enterprise applications with real-time reasoning, structured data capture, and broad language support. The family is evaluated on the τ-voice Bench leaderboard for full-duplex voice agents under realistic conditions.
Current Variants
Use-when guidance is derived from seed capabilities, context, release, and replacement fields.
1 in view
Grok Voice Think Fast 1.0Current
Use when the workload needs voice, reasoning, and tool use.
2026-04voicereasoningtool use
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| Grok Voice Think Fast 1.0 | Use when the workload needs voice, reasoning, and tool use. | 2026-04 | voicereasoningtool use | Current |
Release Timeline
1 release group2026-04
1 current
Grok Voice Think Fast 1.0
Currentvoicereasoningtool use
Specifications(1 models)
| Model | Released | Multimodal | Reasoning | Fn Calling | Tool Use | Structured Outputs |
|---|---|---|---|---|---|---|
| Grok Voice Think Fast 1.0 | 2026-04 | Yes | Yes | Yes | Yes | Yes |
Frequently Asked Questions
- What is Grok Voice used for?
- Grok Voice is used for voice, vision and multimodal work, and reasoning. The family description and listed model capabilities point to those workloads as the best fit.
- How does Grok Voice compare to Grok 1?
- Grok Voice by xAI is strongest where you need voice, while Grok 1 by xAI is the closest related family to check for reasoning. Grok Voice has 1 listed variant, so compare the specs and pricing tables before choosing a production model.
- Which Grok Voice model should I use?
- If price is the main constraint, use the pricing table first because Grok Voice does not have complete provider pricing in the local data. For the most capable/latest local choice, evaluate Grok Voice Think Fast 1.0 with reasoning, tool use, function calling, structured outputs, and multimodal inputs.
