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Meta Just Open-Weighted an 816B Model. Here's What the Fine Print Actually Says

Meta dropped the weights for Muse Spark Open on October 15, and it's sitting at ~800 points on Hacker News. Most of the takes are either "Meta is back" or "that's not open source." Both are lazy. Let's look at what you actually get. The spec sheet 816B total parameters, 42B active (mixture-of-exper…

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  1. 2026-10-16 09:02 · DEV Community — Machine Learning
    Meta Just Open-Weighted an 816B Model. Here's What the Fine Print Actually Says

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