LMArena is an open-source platform for crowdsourced AI benchmarking, created by researchers from UC Berkeley SkyLab (SkyLab). For more information on how the leaderboard is constructed, see LMArena - Blog. The question will be suspended on 11 December 2025 and the outcome determined using the ranks as reported by LMArena at approximately 5:00p.m. ET on 12 December 2025 (LM Arena - Text Arena Leaderboard, see "Rank (UB)"). As of 30 September 2025, Google was ranked first, with its "gemini-2.5-pro" scoring 1456, followed by Anthropic's "claude-opus-4-1-20250805-thinking-16k" scoring 1449. In the event of a tie for first place by LLMs of different organizations, the LLM with the higher "Score" will be considered first, followed by the "Votes" total. If the named source changes the way it presents the data, further instructions will be provided.

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