{
  "id": 14770713,
  "title": "Meta and Apple Bring Muse Spark Open AI Model to Mac Studio",
  "url": "https://urgent.news/2026/10/15/meta-and-apple-bring-muse-spark-open-ai-model-to-mac-studio-14770713",
  "topic": "ai",
  "section": "AI",
  "published": "2026-10-15T19:00:00.000Z",
  "source": {
    "name": "Slashdot",
    "slug": "slashdot",
    "url": "https://apple.slashdot.org/story/26/10/15/189249/meta-and-apple-bring-muse-spark-open-ai-model-to-mac-studio"
  },
  "original_language": "en",
  "account": "Meta has unveiled Muse Spark Open, an 816-billion-parameter open-weight model that runs locally on two 512GB M5 Ultra Mac Studios equipped with Apple's MLX framework. According to Meta, this model is currently the most powerful U.S. open-weight model available. MacRumors reports that Muse Spark Open boasts 816 billion total parameters, 42 billion of which are actively used, and features a 1 million-token context window. It is designed for coding and agentic tasks, with Meta highlighting its prowess in extended tasks, multi-step reasoning, and software engineering.\n\nThe Muse model has been tailored for optimal performance on Mac Studio. Meta explains that the Mac Studio, combined with Muse Spark Open, provides the best platform for running a potent model on a personal desktop. The reason behind this is Apple's unified memory architecture, which enables each M5 Ultra's integrated GPU to utilize up to 512 GB of memory per Mac Studio. Consequently, two Mac Studios can efficiently store the entire model. Additionally, the chip's 1.2 TB/s of memory bandwidth is sufficient to access the necessary data for each token. As a result, two Mac Studios function as a single supercomputer, boasting a terabyte of unified memory.\n\nIt is worth noting that Apple has not yet released the 512GB Mac Studio, but it is expected to launch later in the month. However, it should be noted that the 256GB Mac Studio is already priced over $10,000, suggesting that the 512GB model will likely come with a similarly high price tag.",
  "summary": "Meta has released Muse Spark Open, an 816-billion-parameter open-weight model optimized to run locally across two 512GB M5 Ultra Mac Studios using Apple's MLX framework. Meta says it's the \"most capable U.S. open-weight model to date.\" MacRumors reports: Muse Spark Open has 816 billion total parameters with 42 billion active parameters and a 1 million-token context window. It is meant for coding…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 7,
    "also_reported_by": [
      {
        "outlet": "Hugging Face",
        "title": "Welcome Muse Spark Open: open-weight frontier multimodal mixture-of-experts model from Meta",
        "url": "https://urgent.news/2026/10/15/welcome-muse-spark-open-open-weight-frontier-multimodal-mixture-of",
        "published": "2026-10-15T00:00:00.000Z"
      },
      {
        "outlet": "CNBC",
        "title": "Apple and Meta team up to make Muse AI model run on Mac computers",
        "url": "https://urgent.news/2026/10/15/apple-and-meta-team-up-to-make-muse-ai-model-run-on-mac-computers-14744381",
        "published": "2026-10-15T17:00:01.000Z"
      },
      {
        "outlet": "Techmeme",
        "title": "Meta releases Muse Spark Open, saying it is the most capable US open-weight model, with 816B total and 42B active parameters and a 1M-token context window (Meta AI Research)",
        "url": "https://urgent.news/2026/10/15/meta-releases-muse-spark-open-saying-it-is-the-most-capable-us-open",
        "published": "2026-10-15T17:10:01.000Z"
      },
      {
        "outlet": "AWS Machine Learning",
        "title": "Meta’s Muse Spark Open now available in Amazon SageMaker JumpStart",
        "url": "https://urgent.news/2026/10/15/metas-muse-spark-open-now-available-in-amazon-sagemaker-jumpstart",
        "published": "2026-10-15T17:43:35.000Z"
      },
      {
        "outlet": "MacRumors",
        "title": "Meta and Apple Bring Muse Spark Open AI Model to Mac Studio",
        "url": "https://urgent.news/2026/10/15/meta-and-apple-bring-muse-spark-open-ai-model-to-mac-studio",
        "published": "2026-10-15T17:47:29.000Z"
      },
      {
        "outlet": "The Verge",
        "title": "Meta and Apple team up to make Muse AI models run better on Macs",
        "url": "https://urgent.news/2026/10/15/meta-and-apple-team-up-to-make-muse-ai-models-run-better-on-macs",
        "published": "2026-10-15T18:15:36.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}