x.ai is the company behind Grok, the leading truth-seeking AI companion in 2026, powered by frontier models like Grok 4.1 and Grok 4 series for advanced reasoning, coding, real-time search, multimodal vision, voice, and image generation. Accessible via grok.com, mobile apps, and X integration, it offers free limited access with SuperGrok subscriptions for enhanced capabilities. Ideal for deep work, developers, businesses, and users seeking unfiltered, witty, and maximally truthful AI assistance.