Grok-4 is xAI's 2025 flagship AI model, developed by Elon Musk's team. It features advanced reasoning, multimodal understanding, real-time web access, and both generalist and developer (Grok-4 Code) variants. Grok-4 is designed for truth-seeking, less censored responses, and excels at complex problem-solving, coding, and up-to-date information retrieval.