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

# Grok Models

> Call Grok text models through the OpenAI Chat Completions format

> Дата обновления: 2026-06-06

# Grok Models

```
POST /v1/chat/completions
```

Grok text models use the OpenAI-compatible Chat Completions format. Point `base_url` to Crazyrouter and pass the Grok model ID in `model`.

<Note>
  Model availability depends on channel status, token permissions, and the live pricing configuration. Before production use, call `GET /v1/models` with the same API key and confirm that the target model is visible.
</Note>

## Common Models

| Model                       | Description                       |
| --------------------------- | --------------------------------- |
| `grok-4`                    | Main Grok 4 model                 |
| `grok-4-fast`               | Grok 4 fast variant               |
| `grok-4-fast-non-reasoning` | Grok 4 fast non-reasoning variant |
| `grok-4-fast-reasoning`     | Grok 4 fast reasoning variant     |
| `grok-4.1`                  | Grok 4.1                          |
| `grok-4.1-fast`             | Grok 4.1 fast                     |
| `grok-4.1-thinking`         | Grok 4.1 thinking                 |
| `grok-4.2`                  | Grok 4.2                          |
| `grok-4-0709`               | Dated Grok 4 model                |

<Warning>
  Older `grok-4` / `grok-4.1` names may still appear in historical calls or compatibility setups, but the public pricing surface primarily keeps the `grok-4*` family. New integrations should start with `grok-4`, `grok-4.1`, `grok-4.2`, or the fast/reasoning variants.
</Warning>

## Minimal Request

<CodeGroup>
  ```bash cURL theme={null}
  curl https://api.crazyrouter.com/v1/chat/completions \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer YOUR_API_KEY" \
    -d '{
      "model": "grok-4",
      "messages": [
        {
          "role": "user",
          "content": "Reply with one short sentence: what is Grok?"
        }
      ],
      "temperature": 0.7,
      "max_tokens": 120
    }'
  ```

  ```python Python theme={null}
  from openai import OpenAI

  client = OpenAI(
      api_key="YOUR_API_KEY",
      base_url="https://api.crazyrouter.com/v1",
  )

  response = client.chat.completions.create(
      model="grok-4",
      messages=[
          {"role": "user", "content": "Reply with one short sentence: what is Grok?"}
      ],
      temperature=0.7,
      max_tokens=120,
  )

  print(response.choices[0].message.content)
  ```

  ```javascript Node.js theme={null}
  import OpenAI from "openai";

  const client = new OpenAI({
    apiKey: "YOUR_API_KEY",
    baseURL: "https://api.crazyrouter.com/v1",
  });

  const response = await client.chat.completions.create({
    model: "grok-4",
    messages: [
      { role: "user", content: "Reply with one short sentence: what is Grok?" },
    ],
    temperature: 0.7,
    max_tokens: 120,
  });

  console.log(response.choices[0].message.content);
  ```
</CodeGroup>

## Streaming

Set `stream: true` to use SSE streaming.

```bash theme={null}
curl https://api.crazyrouter.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "grok-4-fast",
    "stream": true,
    "messages": [
      {
        "role": "user",
        "content": "Write a concise API migration checklist."
      }
    ]
  }'
```

## Reasoning Variants

For Grok models containing `reasoning` or `thinking` in the name, keep the request shape simple:

```json theme={null}
{
  "model": "grok-4-fast-reasoning",
  "messages": [
    {
      "role": "user",
      "content": "Compare two implementation options and explain the tradeoffs."
    }
  ],
  "max_tokens": 800
}
```

<Note>
  Reasoning fields, search fields, and experimental parameters can differ by upstream channel. For cross-channel stability, prefer standard OpenAI Chat fields: `model`, `messages`, `temperature`, `top_p`, `max_tokens`, and `stream`.
</Note>

## Related Image Models

Grok image generation does not use Chat Completions. Use:

```text theme={null}
POST /v1/images/generations
```

See [Grok Image Models](/ru/images/grok) for image parameters.

Related pages:

* [Official Model Pricing Methods](/ru/reference/official-pricing-methods)