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Can two Mac Studios really run an 816B model? A bandwidth roofline check on Muse Spark Open

This story is from 2026-10-20. It is preserved in the archive; the latest stories are on the live feed.

TL;DR Meta released Muse Spark Open on 2026-10-15: 816B total parameters, 42B active per token, a 1M-token context window, under a custom Muse Model License with limited commercial terms. Apple published decode benchmarks the same day on Mac Studio M5 Ultra machines linked by RDMA over Thunderbolt.…

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  1. 2026-10-20 13:37 · DEV Community — Machine Learning
    Can two Mac Studios really run an 816B model? A bandwidth roofline check on Muse Spark Open

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