Meta's new model wins first place on three leaderboards, Legal Agent overtakes Grok 4.5

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According to monitoring by Beating, AI evaluation agency Vals AI announced the results of Muse Spark 1.1. The model ranked first in three evaluations: medical documents, tax Q&A, and legal agent, with scores of 88.89%, 79.72%, and 20.00%, respectively.

In the tax evaluation TaxEval v2, it surpassed Fable 5, Opus 4.8, and GPT-5.5. The evaluation includes over 1,200 undisclosed test questions, checking both answers and reasoning processes. The gap among top models is small, with the top ten differing by less than 3 percentage points.

In the legal agent evaluation, Muse Spark 1.1 scored 20.00%, exceeding Grok 4.5's 12.92% and Fable 5's 11.25%. The test requires the model to use document, spreadsheet, and file tools to complete real legal work.

In the web application programming evaluation, it scored 72.16%, surpassing GPT-5.5, Grok 4.5, and GPT-5.4, but still trailing Fable 5 and multiple Claude models.

META4.68%
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