Elon Musk's artificial intelligence startup, xAI, has joined the likes of OpenAI, Google, and Anthropic to develop cutting edge LLMs (Guardian, Testing Catalog, x.ai). The question will be suspended on 16 October 2025 and the outcome determined using the "Arena Score" data as reported by the Chatbot Arena LLM Leaderboard at approximately 5:00PM ET on 17 October 2025 (Chatbot Arena, click the arrow to the right of "Arena Score" and see "Organization" column). As of 14 April 2025, xAI's rank was third as an organization with its "Grok-3-Preview-02-24" model ranked behind Google's best model [Gemini-2.5-Pro-Exp-03-25] and OpenAI's best model [ChatGPT-4o-latest (2025-03-26]). For more information on how the leaderboard is constructed, see (LMSYS Blog). In the event of an Arena Score tie for a rank among models from different organizations, the LLM with the higher number of "Votes" will be deemed to be ranked higher. If an organization has two or more models ranked higher than the highest-ranked model of xAI, that organization will only be counted once.

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NOTE 27 May 2025: The source has changed the layout of its site. The "Text Arena" leaderboard will be used for resolution (https://lmarena.ai/leaderboard/text).