Meta prepares open-weights release of Muse Spark 1.3
Meta says it will release open weights for its Muse Spark 1.3 model soon. The company says the update has been trained to avoid wasting tokens and to ask for help more often when needed. The RSS material does not provide a release date, benchmark details, licence terms or deployment requirements.
Why it matters
An open-weights release would give developers another model to inspect, adapt and run outside closed services.
Sources
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Part of the September 3, 2026 brief.