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Large Language ModelsOpen-Source AIAI Business & IndustryVentureBeat AIPublished: Apr 9, 2026, 04:00 JST

Meta launches Muse Spark, a new proprietary AI model under restructured leadership after Llama 4's disappointing reception in 2024.

Meta formed Metal Superintelligence Labs (MSL) in summer 2025 after the Llama 4 benchmark-gaming scandal prompted CEO Mark Zuckerberg to overhaul AI operations

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