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Meta Muse Spark 1.3 architecture launch artwork

AI Research

02 Sept 2026

Meta Releases Muse Spark 1.3: 1M Multimodal Reasoning Model for Autonomous Agent Workflows

Meta Superintelligence Labs has published Muse Spark 1.3, an open-weights frontier agent model with 1,048,576 context tokens and comprehensive multimodal comprehension.

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Meta Muse Spark 1.3 Model release

7 min read • 4 takeawaysReadarrow_forward