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    "url": "https://anawords.com/story/meta-muse-spark-open-open-weight-model-816b",
    "title": "Meta releases Muse Spark Open, an 816-billion-parameter open-weight model that can run on two Mac Studios",
    "summary": "The model has a 1-million-token context window and is free for many developers under Meta’s new Muse Model License. Meta’s own benchmark table shows it ahead of rival open models on some tests and behind on most coding tests.",
    "section": "Open Source AI",
    "type": "open",
    "published": "2026-10-16T12:59:14+05:30",
    "updated": "2026-10-16T12:59:14+05:30",
    "version": 1,
    "author": {
        "name": "Mayank Sahu",
        "url": "https://anawords.com/author/mayank-sahu"
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            "text": "Meta released Muse Spark Open on 15 October 2026 with open weights.",
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            "sources": [
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                2
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            "id": "f2",
            "text": "It has 816 billion total and 42 billion active parameters and a 1-million-token context.",
            "label": "confirmed",
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            "key_fact": true,
            "sources": [
                1,
                2
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            "text": "Hosted services earning over $20 million in 12 months need a separate agreement with Meta.",
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            "text": "It trails Kimi K3 on Terminal-Bench 2.1, 76.4 to 85.0, in Meta’s own table.",
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            "sources": [
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            "n": 1,
            "url": "https://research.meta.ai/blog/muse-spark-open",
            "title": "Meta AI: Muse Spark Open",
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            "checked": "16 Oct 2026",
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            "n": 2,
            "url": "https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B",
            "title": "Hugging Face: Muse-Spark-Open-816B-A42B model card and licence",
            "type": "official",
            "checked": "16 Oct 2026",
            "archive": {
                "url": "https://web.archive.org/web/20261016054007/https://huggingface.co/meta-models/Muse-Spark-Open-816B-A42B",
                "archived": "2026-10-16T11:10:07+05:30"
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            "original_gone": false
        },
        {
            "n": 3,
            "url": "https://www.theregister.com/a/5294093",
            "title": "The Register: Zuck’s Muse to Spark joy with open weights release ‘soon’",
            "type": "outlet",
            "checked": "16 Oct 2026",
            "archive": null,
            "original_gone": false
        }
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            "key": "meta-publish-the-full-evaluation-report-for-muse-spark-open",
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        "facts_and_data": "Creative Commons Attribution 4.0 (CC BY 4.0)",
        "url": "https://creativecommons.org/licenses/by/4.0/",
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        "attribution": "Anawords, https://anawords.com/story/meta-muse-spark-open-open-weight-model-816b"
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