xAI's Grok 4.1 Fast has achieved the #1 position on the τ²-Bench Telecom for agentic tool use, marking a significant advancement in AI capabilities. Concurrently, Grok Code Fast 1 has demonstrated overwhelming dominance on OpenRouter, securing the #1 spot in token usage across "Top Today," "This Week," and "This Month" categories. These achievements highlight xAI's rapid progress in the competitive artificial intelligence landscape.
The Grok 4.1 model, released by Elon Musk's xAI, has shown notable performance across various benchmarks. Grok 4.1 Thinking, a variant focusing on deeper reasoning, briefly held the top position on the LMArena Text Arena leaderboard with an Elo score of 1483, outperforming several rival models. This version is designed for creative, emotional, and collaborative interactions, demonstrating improved perceptiveness and reduced hallucination rates compared to its predecessors.
Grok 4.1 Fast also secured the #1 position on OpenRouter's Programming Leaderboard and Trending charts, while ranking #2 on "Top Today" and "This Week" lists, and maintaining its status as the second most popular English LLM on the platform. Grok Code Fast 1, specifically engineered for coding tasks, commands the largest market share for xAI in the programming use case. It also swept #1 positions on Kilo Code, Cline, BlackBox AI, and Roo Code Leaderboards, underscoring its specialized prowess.
xAI's strategy involves rapid iteration and broad availability, with Grok 4.1 now accessible to all users across Grok.com, X, and mobile applications. The company aims to deliver highly capable models without paywalls, fostering widespread adoption and real-world testing. While Grok 4.1's initial LMArena lead was briefly surpassed by Google's Gemini 3, its strong showing across multiple specialized leaderboards affirms xAI's aggressive challenge for AI market leadership.