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

# Grok 4.3

> xAI's Grok 4.3 language model. See supported inputs, parameters, pricing, response fields, and API examples.

Grok 4.3 is xAI's fast, low-cost reasoning model with a 1M context window, strong tool calling, and a reasoning effort of none, low, medium, or high.

## Model

```
xai/grok-4.3
```

|              |          |
| ------------ | -------- |
| **Provider** | xAI      |
| **Name**     | Grok 4.3 |

## Supported Endpoints

All three API formats are supported:

* [Chat Completions](/api-reference/v1-chat-completions) — `POST /v1/chat/completions`
* [Responses](/api-reference/v1-responses) — `POST /v1/responses`
* [Messages](/api-reference/v1-messages) — `POST /v1/messages`

## Example

```bash theme={null}
curl -X POST https://api.unifically.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "xai/grok-4.3",
    "messages": [
      {"role": "user", "content": "Extract the customer name, order number, and issue from this ticket as JSON."}
    ]
  }'
```

<Note>
  **Volume discounts** are available for almost all models. Reach out at [contact@unifically.com](mailto:contact@unifically.com) to discuss custom pricing.
</Note>