model release
Meta releases Muse Spark Open, an 800B-parameter open-weight model built for Apple M5 Ultra Macs
Meta released Muse Spark Open, an 800-billion-parameter open-weight model, on October 15, 2026. It is optimized for Apple's M5 Ultra Mac Studio and needs roughly 1TB of memory to run locally. Meta claims it outperforms GLM 5.3 and Kimi K3 on agentic tasks and visual reasoning.
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