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Meta has released the open-weight Muse Spark Open model and worked with Apple to demonstrate it running locally on two Mac Studios with 512GB of unified memory each. The model has 816 billion total parameters and a 1 million-token context window; the demonstrated configuration is not yet on sale.
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Meta announced Muse Spark Open and said it can run on two Apple M5 Ultra Mac Studios using the latest MLX framework. Meta and Apple worked together on the launch; Meta said the model’s weights were being released that day.
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Meta has released the open-weight Muse Spark Open model and worked with Apple to demonstrate it running locally on two Mac Studios with 512GB of unified memory each. The model has 816 billion total parameters and a 1 million-token context window; the demonstrated configuration is not yet on sale.
Muse Spark Open supports a 1M-token context window and is designed for coding and agent collaboration. Developers can now access it through several API platforms or download its weights; the weights are released under the Muse Model License with restrictive commercial terms, and the report says most developers can use the model for free.
Muse Spark Open also supports long-horizon coding. Hugging Face showed paths for quantized inference, tool use and fine-tuning to help developers assess memory, context overhead and hardware requirements for trying and deploying the model.
Meta announced Muse Spark Open and said it can run on two Apple M5 Ultra Mac Studios using the latest MLX framework. Meta and Apple worked together on the launch; Meta said the model’s weights were being released that day.