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xAI: Grok 4

x-ai-grok-4x-aiClosed Source Model$9.000000 / call

xAI: Grok 4

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About XAI: Grok 4

Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not...

Technical Specifications

Model ID
x-ai-grok-4
Category
LLM Models
Task
Text Generation
Price
$9.000000 per million tokens
Added
February 20, 2026

Key Features

  • Chat completion and multi-turn conversation API
  • Streaming response with token-by-token output
  • Function calling and tool use support
  • System prompts and role-based messaging
  • JSON mode and structured output

Quick Start

Integrate XAI: Grok 4 into your application with a single API call. Get your API key from the pricing page to get started.

import requests
import json


url = "https://modelslab.com/api/v7/llm/chat/completions"


headers = {
    "Content-Type": "application/json"
}


data = {
        "model_id": "x-ai-grok-4",
        "messages": [
            {
                "role": "user",
                "content": "Hello!"
            }
        ],
        "max_tokens": 1000,
        "key": "YOUR_API_KEY"
    }


try:
    response = requests.post(url, headers=headers, json=data)
    response.raise_for_status()  # Raises an HTTPError for bad responses (4XX or 5XX)
    result = response.json()
    print("API Response:")
    print(json.dumps(result, indent=2))
except requests.exceptions.HTTPError as http_err:
    print(f"HTTP error occurred: {http_err} - {response.text}")
except Exception as err:
    print(f"Other error occurred: {err}")

View the full API documentation for SDKs, code examples in Python, JavaScript, and more.

Pricing

XAI: Grok 4 API costs $9.000000 per million tokens. Pay only for what you use with no minimum commitments. View pricing plans

Use Cases

  • AI chatbots and virtual assistants
  • Code generation and developer tools
  • Content writing and copywriting automation
  • Data analysis, summarization, and extraction
Learn more about XAI: Grok 4Browse LLM ModelsMore from X AiView Pricing

XAI: Grok 4 FAQ

Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not...

You can integrate XAI: Grok 4 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "x-ai-grok-4" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

XAI: Grok 4 costs $9.000000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started.

The model ID for XAI: Grok 4 is "x-ai-grok-4". Use this ID in your API requests to specify this model.

Yes, ModelsLab offers a free tier that lets you try XAI: Grok 4 and other AI models. Sign up to get free API credits and start building immediately.