Google has released Gemma 4, its most capable open model family to date, available in four sizes: Effective 2B (E2B), Effective 4B (E4B), 26B Mixture of Experts, and 31B Dense. The 31B model ranks #3 and the 26B ranks #6 on the Arena AI open model leaderboard, outperforming models 20x their size. Key capabilities include
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