LMSys has discontinued model versioning for its Chatbot Arena, a platform for evaluating large language models. This change means users will no longer be able to specify or compare exact model versions like GPT-4o 1120 or Gemini Exp 1121. The platform will now focus on broader model releases rather than granular version tracking. AI
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RANK_REASON The change impacts a popular platform for LLM evaluation, affecting how users interact with and compare models.