Sep 2, 2025lmarena is an open platform for crowdsourced ai benchmarking, originally created by researchers from uc berkeley skylab. Nov 27, 2025lmarena serves ai model developers, researchers, and everyday users seeking fair, unbiased comparisons of ai systems without the influence of marketing or promotional claims. With free access to most features and a strong focus on fostering open ai research, lmarena remains a top choice for understanding and advancing the capabilities of ai models in the real world.
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