Artificial Analysis (@ArtificialAnlys) · 10/20/2026, 23:20:00
US Open-Weights Models Surge: Meta's Muse Spark Tops Intelligence Index
US open-weights models made significant gains in intelligence and parameter efficiency last week. Meta's Muse Spark Open scored 38.9, setting a new record as the most intelligent US open-weights model to date. NVIDIA's Nemotron 3.5 Super VL and Reflection's Beam 1.0 also demonstrated strong performance on the Pareto frontier and multimodal capabilities.
SOURCE COVERAGEFull Original Report
Artificial Analysis (@ArtificialAnlys) · 2026-10-20 15
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