Meta AI Research has released Muse Spark Open, an language model it describes as the most capable US-developed model of its kind. The model features 816 billion total with 42 billion active parameters and supports a 1 million token context window, allowing it to process and generate longer text sequences than most competitors.
Meta is highlighting the model's ability to run on consumer hardware, specifically Apple Mac Studios with M5 Ultra chips, bringing what the company calls capabilities to desktop users. Open-weight models allow developers to download and modify code, making this a competitive move in the growing market for accessible, locally-run AI.
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