Gemini 4 Argon ranked in the top 5 on LMArena's Agent Arena in October 2026, behind Claude Opus 5.5 in first place

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From the tweetGemini 4 Argon (High) ranks in the top 5 for Agent Arena.

Gemini 4 Argon (High) ranks in the top 5 for Agent Arena.

LMArena congratulates Google DeepMind as Gemini 4 Argon (High) ranks top 5 on Agent Arena. The updated leaderboard, using a new Bash Reliability signal, has Claude Opus 5.5 first; the top 14 are proprietary, with GLM 5.2 the best open-weights model at #15.