Meta releases Muse Spark Open: 816B/42B active, 1M context, natively multimodal
MaziyarPanahi · x · 2026-10-16
Meta released Muse Spark Open, calling it the most capable US open-weight model to date, built for coding and agentic work with strengths in long-horizon tasks, complex software engineering and multi-step reasoning. Specs: 816B total / 42B active parameters, 1M-token context window, natively multimodal across text, image, video and audio.
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