LMArena (formerly the LMSYS Chatbot Arena) ranks models from anonymous, blind head-to-head votes cast by the public (leaderboard). In this corpus it registers releases rather than research: OpenAI’s GPT Image 1.5 took the top spot on release, and in February xAI’s Grok Imagine pushed the image-generation Pareto frontier on the same arena.
Benchmark
LMArena
The crowdsourced pairwise-preference leaderboard, the corpus's read on which model humans prefer in the open rather than on a fixed test set.
Sources
Attribution and reporting linked by this record; links do not imply independent verification.
- Welcome to December 17, 2025 (theinnermostloop.substack.com)
Development timeline
Newest reporting dates first. Reporting dates may differ from event dates.
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