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Available now on ModelsLab · Language Model

XAI: Grok 4Reasoning. At scale. Now.

Try XAI: Grok 4API Documentation

Frontier Intelligence. Built Different.

Massive Context

256K Token Window

Process entire codebases and 500-page documents in a single prompt without chunking.

Real-Time Data

Live Search Integration

Access current information across X, web, and news sources for accurate, up-to-date responses.

Multi-Agent Power

Grok 4 Heavy Mode

Four AI agents collaborate in parallel, debating and verifying solutions for superior accuracy.

Examples

See what XAI: Grok 4 can create

Copy any prompt below and try it yourself in the playground.

Code Architecture Review

“Review this Python microservices architecture for scalability bottlenecks. Analyze the database schema, API endpoints, and suggest optimization patterns for handling 100K concurrent users.”

Market Research Synthesis

“Search for the latest AI model benchmarks from 2026. Compare performance metrics across reasoning, coding, and multimodal tasks. Identify emerging trends in frontier model development.”

Technical Documentation

“Generate comprehensive API documentation for a real-time data processing system. Include endpoint specifications, authentication flows, rate limiting, and error handling examples.”

Data Analysis

“Upload a quarterly revenue chart and analyze trends. Identify growth patterns, anomalies, and provide strategic recommendations based on the data visualization.”

For Developers

A few lines of code.
Reasoning. Three lines.

ModelsLab handles the infrastructure: fast inference, auto-scaling, and a developer-friendly API. No GPU management needed.

  • Serverless: scales to zero, scales to millions
  • Pay per token, no minimums
  • Python and JavaScript SDKs, plus REST API
API Documentation 
import requests


response = requests.post(
    "https://modelslab.com/api/v7/llm/chat/completions",
    json={
  "key": "YOUR_API_KEY",
  "prompt": "",
  "model_id": ""
}
)
print(response.json())

FAQ

Common questions about XAI: Grok 4

Read the docs

Grok 4 combines a 256K context window, native tool use, real-time search integration, and multi-agent reasoning in Heavy mode. It achieves performance on complex reasoning benchmarks while maintaining low latency through GPU-backed infrastructure.

Grok 4 Heavy deploys four specialized AI agents that analyze problems in parallel, then collaborate to verify and refine solutions. This multi-agent approach achieves 50.7% accuracy on benchmarks—over double traditional tool-free models.

Pricing varies by usage tier and token consumption. The API supports pay-as-you-go models with volume discounts. Check xAI's pricing page for current rates and enterprise options.

Yes. Grok 4 integrates live search across X, web, and news sources, enabling real-time data retrieval. Low latency (2.55s time-to-first-token) supports interactive applications and live Q&A scenarios.

Grok 4 processes text, images, diagrams, and charts. It includes Eve, a natural-sounding voice assistant for spoken conversations. Vision and image generation capabilities are available through the API.

Yes. Grok 4 Fast uses 40% fewer thinking tokens, achieving up to 98% cost reduction while maintaining near-equivalent performance. It runs 10x faster than standard Grok 4 with a 2M token context window.

Ready to create?

Start generating with XAI: Grok 4 on ModelsLab.

Try XAI: Grok 4API Documentation