Meta's Muse Spark Open raises the stakes for open, locally deployable frontier models

Meta released Muse Spark Open, an approximately 816B-parameter multimodal MoE with about 42B active parameters, million-token context, and low-bit serving support. Its roughly 537GB quantized footprint and mostly vendor-reported performance limit accessibility and confidence; social comparisons and Nvidia's Nemotron 3.5 Super VL announcement are preliminary rather than independent capability evidence.