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One of thenew flagship AI modelsMeta released on Saturday , Maverick , ranks secondly on LM Arena , a trial that has human raters compare the output of theoretical account and prefer which they prefer . But it seems the interpretation of Maverick that Meta deployed to LM Arena disagree from the version that ’s widely available to developer .
AsseveralAIresearcherspointed out on X , Meta observe in its annunciation that the Maverick on LM Arena is an “ experimental chat version . ” A chart on theofficial Llama internet site , meanwhile , discloses that Meta ’s LM Arena testing was conducted using “ Llama 4 Maverick optimized for conversationality . ”
As we ’ve written about before , for various reasons , LM Arena has never been the most reliable measure of an AI model ’s performance . But AI companies generally have n’t customized or otherwise OK - tune their models to score better on LM Arena — or have n’t admit to doing so , at least .
The problem with tailoring a model to a bench mark , withholding it , and then exhaust a “ vanilla ” variant of that same manakin is that it constitute it take exception for developer to predict exactly how well the manikin will do in particular contexts . It ’s also misleading . Ideally , benchmarks — woefully short as they are — provide a snapshot of a exclusive mannikin ’s forcefulness and weaknesses across a scope of undertaking .
Indeed , research worker on hug drug haveobserved starkdifferences in the behaviorof the publicly downloadable rebel compare with the exemplar host on LM Arena . The LM Arena version seems to habituate a flock of emojis , and give incredibly long - winded answers .
Okay Llama 4 is def a littled cooked lol , what is this yap citypic.twitter.com/y3GvhbVz65
— Nathan Lambert ( @natolambert)April 6 , 2025
for some reason , the Llama 4 model in Arena uses a lot more Emojis
on together . ai , it seems better : pic.twitter.com / f74ODX4zTt
— Tech Dev Notes ( @techdevnotes)April 6 , 2025
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We ’ve reached out to Meta and Chatbot Arena , the organization that maintains LM Arena , for commentary .
