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Grok is xAI's AI platform built around the Grok 4 model, combining conversational assistance, advanced reasoning, coding, and real-time web search into a single service.
Grok is xAI's flagship AI platform, centered on the Grok 4 language model, which you can try at grok4.app. It takes natural-language prompts and produces text responses, code, and (soon) image and video outputs, with a 130,000-token context window. The platform runs on xAI's Colossus supercomputer and is accessible via web, mobile, and API, with the current Grok 4 release expected to expand to vision and image generation.
The typical interaction follows three steps: you input a query in natural language, Grok4 processes it using its reasoning engine and any relevant real-time data, and then it delivers a response—whether a text answer, working code, or a detailed explanation. The platform also offers Auto Mode, which automatically routes complex prompts to the strongest model.
Grok offers a free tier with limited daily requests, plus paid subscription tiers: X Premium+, which bundles advanced Grok features with X platform access, and SuperGrok, a stand-alone AI subscription with higher limits. Enterprise customers can purchase custom API access with dedicated support.
Yes, xAI currently offers limited-time free access to all users, with non-subscribers limited to 5 requests per day. This free access includes both Auto Mode, which routes complex prompts to Grok 4 automatically, and Expert Mode for manual activation.
Grok 4 is expected to be released after July 4, 2025, though some API endpoints are already available. The model represents a significant upgrade from Grok 3, skipping the originally planned Grok 3.5.
Grok4 competes with ChatGPT, Claude, and Gemini, excelling in mathematical reasoning (AIME 2025: 52 vs GPT-4o's 48), scientific knowledge (GPQA: 75), and coding (LCB: 57). Its advantages include a 130K context window, real-time data access, and specialized enterprise knowledge.
Grok4 Code is a specialized model designed as a coding companion for advanced IDE integration, built-in file editors, and Cursor compatibility. It can answer code questions, review and debug code, and work within a VSCode-like interface on the web.
