According to Sawyer Merritt, xAI has released Grok 4.1, now available on web, iOS, and Android platforms, featuring major improvements in real-world usability for AI chatbot applications. Grok 4.1 offers enhanced creativity, emotional intelligence, and collaborative interaction capabilities, making it more perceptive to nuanced user intent and delivering a more coherent personality while maintaining strong intelligence and reliability. xAI achieved these upgrades by optimizing its large-scale reinforcement learning infrastructure, placing special emphasis on style, personality, helpfulness, and alignment. Notably, xAI introduced novel reward model techniques using frontier agentic reasoning models to optimize non-verifiable reward signals, such as style and personality. On the business side, Grok 4.1 targets enterprise and consumer sectors seeking reliable, emotionally intelligent AI assistants. Furthermore, xAI focused on reducing factual hallucinations by evaluating hallucination rates on real-world queries and benchmarks such as FActScore, resulting in significant improvements in factual accuracy for production use cases (Source: Sawyer Merritt, Twitter, Nov 17, 2025).