> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zerotwo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# xAI (Grok)

> Grok models from xAI in ZeroTwo — advanced reasoning, real-time knowledge, and fast code generation.

xAI is Elon Musk's AI company, founded in 2023. Grok models are known for their advanced reasoning capabilities, real-time knowledge (via integration with the X/Twitter platform), coding strength, and a distinct personality in responses. Grok models are available in ZeroTwo across all performance tiers.

***

## Available Models

| Model                       | Type | Strengths                                               | Plan Required        |
| --------------------------- | ---- | ------------------------------------------------------- | -------------------- |
| Grok-4                      | Text | Flagship — advanced reasoning, research, and coding     | Pro+ (Premium)       |
| Grok-3                      | Text | Previous generation flagship, strong general capability | Pro+ (Premium)       |
| Grok Code Fast              | Text | Optimized for fast code generation and technical tasks  | Pro+                 |
| Grok-4-1-fast-non-reasoning | Text | Fast standard Grok for everyday tasks                   | Standard (all plans) |

***

## Strengths

**Advanced reasoning:** Grok-4 is xAI's most capable model, with strong performance on complex reasoning tasks, scientific questions, and multi-step problem-solving.

**Real-time knowledge:** Grok models have access to real-time information from the X (formerly Twitter) platform, giving them an edge on current events, trending topics, and time-sensitive queries. This is a unique advantage over most other AI models.

**Coding:** Grok models perform strongly on code generation, debugging, and technical analysis. Grok Code Fast is purpose-optimized for speed in coding tasks.

**Research:** Grok-4's combination of strong reasoning and real-time knowledge makes it well-suited for research tasks requiring both depth and currency.

**Personality:** Grok models are known for more expressive, sometimes witty responses compared to other models. They can be more engaging for conversational use cases.

***

## Best Use Cases

<CardGroup cols={2}>
  <Card title="Coding assistance" icon="cpu">
    Grok-4 and Grok Code Fast deliver fast, accurate code generation, debugging, and technical documentation.
  </Card>

  <Card title="Research with real-time data" icon="search">
    Grok's X platform integration provides current events context unavailable in other models.
  </Card>

  <Card title="Technical analysis" icon="layers">
    Complex technical reasoning, system design, and analytical tasks benefit from Grok-4's reasoning depth.
  </Card>

  <Card title="General chat" icon="globe">
    Grok-4-1-fast provides strong general-purpose AI assistance on the standard tier (no premium quota usage).
  </Card>
</CardGroup>

***

## Choosing a Grok Model

| If you need...                        | Use...                      |
| ------------------------------------- | --------------------------- |
| Best overall reasoning and research   | Grok-4                      |
| Good general capability, previous gen | Grok-3                      |
| Fast code generation                  | Grok Code Fast              |
| Standard tier, everyday tasks         | Grok-4-1-fast-non-reasoning |

***

<Note>
  Grok's real-time knowledge from the X platform is most relevant for current events, breaking news, and social media trends. For other real-time information (financial data, weather, etc.), use ZeroTwo's Web Search tool alongside any model.
</Note>