Meta and Apple Team Up to Run a Frontier Open AI Model on Two Desktops

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Meta and Apple Team Up to Run a Frontier Open AI Model on Two Desktops

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Meta has released Muse Spark Open, an 816-billion-parameter open-weight model with 42 billion active parameters and a one-million-token context window, which it calls the most capable US open-weight model to date. Built with Apple, it runs locally on two 512GB M5 Ultra Mac Studios using Apple's MLX framework. We look at what the unusual partnership between longtime rivals means, how it positions a US company against Chinese open-weight labs, and why the AI race is shifting toward who controls where models run.

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