Leaking Muse's Charter, Meta's model spec

A researcher reconstructed a large portion of the internal behavior specification, or Charter, for Meta's Muse Spark Open model by extracting fragments from its chain-of-thought outputs. The analysis highlights that the document frames the model as a civilization-distilled artifact with explicit rationalist principles, fiduciary duties to users, and provisions for evaluation awareness. The author argues that this approach emphasizes human agency and flourishing compared to competing frameworks like Anthropic's constitution. Open article →