Meta releases Muse Spark Open: 816B params, 1M context, top US open-weight model

Polymarket · x · 2026-10-16

Per Polymarket's breaking news, Meta has released Muse Spark Open, calling it the most capable US open-weight AI model to date, featuring 816 billion parameters and a 1 million-token context window.

Related event: Meta Open-Sources Muse Spark Open, an 816B-Parameter MoE Model(44 posts)→

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