{"slug": "meta-becomes-the-heavyweight-in-us-open-weight-models", "title": "Meta becomes the heavyweight in US open-weight models", "summary": "Meta CEO Mark Zuckerberg announced the release of Muse Glimmer as an open-weight model, with Muse Spark 1.2 to follow, signaling a return to open-weight AI models after a period of closed models. The move aims to counter China's popular open-weight models and aligns with U.S. AI sector interests.", "body_md": "**Mark Zuckerberg announced the release of Muse Glimmer as an open-weight model and soon Muse Spark 1.2 as well**\n\nMeta had originally released its LLaMa models as open-weight models, but appeared to shift to close models to compete with OpenAI and Anthropic. But today’s announcement signals a shift back to open weight models. ** **\n\nThis is a move that many in the U.S. AI sector wanted, in part to neutralize China’s popular open-weight models.", "url": "https://wpnews.pro/news/meta-becomes-the-heavyweight-in-us-open-weight-models", "canonical_source": "https://chatgptiseatingtheworld.com/2026/08/10/meta-becomes-the-heavyweight-in-us-open-weight-models/", "published_at": "2026-08-10 18:09:01+00:00", "updated_at": "2026-08-10 18:22:42.625822+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "ai-policy"], "entities": ["Meta", "Mark Zuckerberg", "Muse Glimmer", "Muse Spark 1.2", "OpenAI", "Anthropic"], "alternates": {"html": "https://wpnews.pro/news/meta-becomes-the-heavyweight-in-us-open-weight-models", "markdown": "https://wpnews.pro/news/meta-becomes-the-heavyweight-in-us-open-weight-models.md", "text": "https://wpnews.pro/news/meta-becomes-the-heavyweight-in-us-open-weight-models.txt", "jsonld": "https://wpnews.pro/news/meta-becomes-the-heavyweight-in-us-open-weight-models.jsonld"}}