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We are excited to introduce Grok 4.1, which brings significant improvements to the real-world usability of Grok. Our 4.1 model is exceptionally capable in creative, emotional, and collaborative interactions. It is more perceptive to nuanced intent, compelling to speak with, and coherent in personality, while fully retaining the razor-sharp intelligence and reliability of its predecessors. To achieve this, we used the same large scale reinforcement learning infrastructure that powered Grok 4 and applied it to optimize the style, personality, helpfulness, and alignment of the model. In order to optimize these non-verifiable reward signals, we developed new methods that let us use frontier agentic reasoning models as reward models to autonomously evaluate and iterate on responses at scale. Grok 4.1 is an advanced AI model developed by xAI, designed to process and understand information in real-time. Built on a sophisticated architecture, it offers several key capabilities: Real-Time Data Processing: Grok 4.1 can analyze live data streams, enabling it to identify emerging trends and changes as they occur. Enhanced Reasoning: The model includes a specialized reasoning engine that allows it to perform multi-step analysis and process complex information. Autonomous Capabilities: Grok 4.1 can be integrated with autonomous agents through the xAI API to automate tasks and research processes . These features position Grok 4.1 as a powerful tool for a variety of applications requiring timely information and analytical depth.