Meta's open-weight Muse Spark has 816B parameters. Two Mac Studios can run it (research.meta.ai)
Meta released Muse Spark Open on October 15 as downloadable weights: 816 billion parameters, 42 billion active per token, a 1M-token context window, under a Muse Model License with limited commercial terms. The benchmark section is empty, and the full evaluation report is "available soon".
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