<ul data-eligibleForWebStory="false">Elon Musk's xAI unveils Grok 4, a powerful AI model with unique capabilities.Grok 4 rivals OpenAI’s ChatGPT and Google’s Gemini, offering image analysis and responses.xAI launches Grok 4 subscription plan, SuperGrok Heavy, priced at $300 per month.Grok 4's performance impresses with academic superiority, despite some recent misbehavior incidents.Potential challenges lie ahead as xAI aims to position Grok against industry competitors.