Grok — xAI's Most Advanced AI Platform

Meet Grok4, the future of AI intelligence in your pocket. Developed by xAI, this is the most powerful and advanced AI platform designed to be your ultimate mobile assistant. It goes beyond simple chat to offer unparalleled reasoning, real-time knowledge, and creative power. Whether you're a student tackling complex problems, a developer writing code, a professional needing up-to-date information, or a creator bringing ideas to life, Grok4 is built for you. Its core value is delivering practical, powerful intelligence that enhances productivity and solves real-world challenges seamlessly. With a massive 130K context window, it handles lengthy documents and detailed conversations with ease, remembering the full scope of your project. Powered by a colossal supercomputer infrastructure, Grok4 integrates flagship language, vision, and coding models into one unified, intuitive app experience, ready to assist with anything from daily queries to enterprise-level tasks.

Advanced Reasoning with Think Mode

Grok4 revolutionizes problem-solving with its Think Mode and Big Brain Mode. It employs first-principles logic and step-by-step axiomatic reasoning to break down complex mathematical, scientific, or logical challenges. Instead of just providing an answer, it shows its work, allowing you to follow the logical process and gain deeper understanding, right from your mobile device.

Superior Coding with Grok4 Code

A dedicated coding model transforms your phone into a development hub. Grok4 Code offers expert coding assistance with IDE integration, file editing capabilities, and compatibility with tools like Cursor. You can write, debug, and optimize code in multiple languages, receive detailed explanations, and manage projects seamlessly through the app's clean interface.

Real-Time Web Search with DeepSearch

Never work with outdated information. Grok4's DeepSearch technology actively scans the internet and the X platform in real-time to fetch the latest data, news, and research. It then provides comprehensive, summarized answers, ensuring you have the most current and relevant information for decision-making, all delivered instantly to your app.

Multi-Modal Creation: Aurora & Grok Imagine

Unleash your creativity with state-of-the-art image and video generation. The Aurora model produces photorealistic images from text descriptions, while Grok Imagine lets you create dynamic videos. This turns your app into a portable creative studio, perfect for generating visual content for presentations, social media, or personal projects on the go.

Academic Research & Complex Analysis

Students and researchers can leverage Grok4's extended context and deep reasoning to analyze lengthy research papers, solve advanced mathematical problems, and prepare detailed reports. Think Mode helps deconstruct complex theories, while real-time search ensures all referenced data is current and accurate.

Professional Software Development

Developers can use the Grok4 Code model directly within their workflow for writing efficient code, debugging errors, and explaining complex algorithms. The app's integration capabilities make it a perfect companion for mobile coding sessions and quick project reviews, boosting productivity anywhere.

Real-Time Business Intelligence

Professionals in finance, marketing, or consulting can use Grok4's DeepSearch to get instant summaries of market trends, competitor activity, and breaking news. The enterprise-ready features allow for custom data analysis, helping teams make informed, timely decisions based on the latest information.

Creative Content Production

Content creators, marketers, and designers can use the integrated Aurora and Grok Imagine tools to rapidly prototype visual ideas. Generate high-quality images for ads, create short video clips for social media, or brainstorm visual concepts—all through a single, user-friendly mobile app interface.

What is Grok4?

Grok4 is xAI's most advanced AI platform, representing a quantum leap in artificial intelligence. It's a multi-modal assistant that combines deep reasoning (Think Mode), superior coding (Grok4 Code), real-time web search, and photorealistic image/video generation into one powerful, app-centric experience designed for both daily use and professional tasks.

Is Grok 4 free to use?

Yes, you can log in and experience Grok4's powerful AI chat for free. This allows users to test its core conversational and reasoning capabilities. For continued full access to all advanced features like extended context, priority access, and the creative suites, a subscription plan is available.

How does Grok4 compare to other AI models?

Grok4 is built on first-principles reasoning and is designed to correct and expand human knowledge. With benchmark-leading scores (like 52 on AIME 2025) and a massive 130K token context, it excels in complex problem-solving and handling long-form content. Its tight integration of real-time search and multi-modal creation in one app also sets it apart from competitors.

What is Think Mode and Big Brain Mode?

Think Mode is an advanced reasoning state where Grok4 breaks down queries using step-by-step logic, showing its analytical process. Big Brain Mode is an enhanced version for tackling exceptionally complex, multi-layered problems. Both modes are easily accessible in the app, providing transparent and thorough solutions to difficult challenges.