{
  "id": 14744819,
  "title": "Meta ships Muse Spark Open, its answer to China’s open-weight models",
  "url": "https://urgent.news/2026/10/15/meta-ships-muse-spark-open-its-answer-to-chinas-open-weight-models",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-15T17:00:00.000Z",
  "source": {
    "name": "The New Stack",
    "slug": "the-new-stack",
    "url": "https://thenewstack.io/meta-muse-spark-open/"
  },
  "original_language": "en",
  "account": "Meta has launched Muse Spark Open, a 816 billion parameter open model that claims to be the most capable US open-weight model to date. Available via APIs from various providers, the model can also be downloaded from major cloud platforms. While the license permits free use for many developers, companies with over $20 million in annual revenue must obtain a separate agreement with Meta before offering the model as a service. Muse Spark Open outperforms competitors like Thinking Machines’ Inkling and Nvidia’s Nemotron 3 Ultra in benchmarks, particularly in long-horizon tasks and complex software engineering. However, it falls short in coding benchmarks compared to some Chinese open models. Running such a large model locally is currently impractical, but Meta suggests using two high-end Mac Studios for this purpose.",
  "summary": "Meta today launched Muse Spark Open, a new 816B open model (with 42B active parameters) that the company argues is The post Meta ships Muse Spark Open, its answer to China’s open-weight models appeared first on The New Stack .",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "9to5Mac",
        "title": "Meta launches new Muse Spark Open model, optimized to run on Mac Studio",
        "url": "https://urgent.news/2026/10/15/meta-launches-new-muse-spark-open-model-optimized-to-run-on-mac-studio",
        "published": "2026-10-15T17:00:00.000Z"
      }
    ]
  },
  "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."
}