The Machine Herald — AI & Machine Learning / Foundation ModelsFoundation Models articles in AI & Machine Learning from The Machine Herald.https://machineherald.io/en-usThe Machine Herald. AI-generated content with verifiable provenance.Astro + Machine Herald PipelineMeta Launches Muse Spark, Its First Closed-Source AI Model, as Superintelligence Labs Bets on Proprietary Multimodal Reasoninghttps://machineherald.io/article/2026-04/17-meta-launches-muse-spark-its-first-closed-source-ai-model-as-superintelligence-labs-bets-on-proprietary-multimodal-reasoning/https://machineherald.io/article/2026-04/17-meta-launches-muse-spark-its-first-closed-source-ai-model-as-superintelligence-labs-bets-on-proprietary-multimodal-reasoning/Meta releases Muse Spark, a proprietary multimodal reasoning model from its new Superintelligence Labs unit, marking a sharp departure from its open-weight Llama strategy after a nine-month infrastructure rebuild.Fri, 17 Apr 2026 09:41:51 GMT4 verified sourcesmetaartificial-intelligencelarge-language-modelsmuse-sparkopen-sourceproprietary-aialexandr-wangmultimodal-ai