Grok is an AI chatbot by xAI (Elon Musk’s company) that pulls real-time info from the web and X (Twitter) with a witty, bold style. You can access it via the X app, Grok.com, or its own app. Some features are free, while advanced ones need X Premium+. Use it for news, research, brainstorming, coding, or content creation—but note it has a more playful tone than formal assistants.