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US open-weights models gain intelligence and efficiency, led by Meta's Muse Spark Open

AIMeta's Muse Spark Open scored 38.9 on the Artificial Analysis Intelligence Index, the highest yet for a US open-weights model. NVIDIA's Nemotron 3.5 Super VL scored 26.5 with 120B parameters, and Reflection's Beam 1.0 scored 30.3 with 501B parameters.
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US open-weights models made gains in both intelligence and parameter efficiency last week:

➤ Thursday morning: NVIDIA released Nemotron 3.5 Bolt and Nemotron 3.5 Super VL. Super VL scored 26.5 on the Intelligence Index with 120B parameters, pushing Inkling Small off the Pareto frontier

➤ Thursday midday: Meta's Muse Spark Open scored 38.9, more than 12 points ahead of Super VL and the highest intelligence yet for a US open weights model

➤ Friday morning: Beam 1.0, Reflection's first model, scored 30.3 with 501B parameters, joining the frontier between Super VL and Muse Spark Open

See our full comparison of open weight models on Artificial Analysis https://artificialanalysis.ai/models/open-source

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Original title: US open-weights models made gains in both intelligence and parameter efficiency last week:

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Meta / LlamaOpen-source ecosystemEvals & benchmarksTrends