# Meta's Muse Spark Shows the Efficiency Turn in Frontier Models, and a Break From Open Weights

Meta Superintelligence Labs says its first model matches the capability of Llama 4 Maverick at over an order of magnitude less compute, and unlike Llama it is closed.

- Published: 2026-06-28T11:02:12.327Z
- Canonical: https://polylog.news/ai/2026-06-28/meta-s-muse-spark-shows-the-efficiency-turn-in-frontier-mode
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Meta AI](https://ai.meta.com/blog/introducing-muse-spark-msl/), [The Next Web](https://thenextweb.com/news/meta-muse-spark-msl-first-model)

Muse Spark is the first model from Meta Superintelligence Labs, the unit assembled under chief AI officer Alexandr Wang after Meta paid roughly 14.3 billion dollars for a stake in Scale AI. Meta describes it as a natively multimodal reasoni…

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