Meta unveils open-weight Muse Glimmer LLM with 30 billion parameters, first in over a year

Meta is returning to publishing open artificial intelligence models: the company has introduced Muse Glimmer with 30 billion parameters. This is Meta's first open LLM in more than a year, and its release signals a revival of the open-weight strategy that Mark Zuckerberg previously questioned.

Following Muse Glimmer, the company promises to release an open version of Muse Spark, though timing and details remain undisclosed. Zuckerberg himself recently mused publicly about "superintelligence" and "the arc of human civilization," noting that the future belongs to billionaires, while the rest may get only open-weight models.

This move contrasts with the Meta CEO's earlier statements that open models could carry risks. Nevertheless, the company appears to have decided to continue experiments in this direction, trying to hold its ground in the generative AI race, where competitors including Anthropic and Together AI are rapidly expanding their presence.

Muse Glimmer is positioned as a model capable of competing with closed counterparts on a range of tasks, though specific benchmarks and use cases are not detailed in the announcement. Observers link Meta's return to open weights to pressure from the developer community and a desire to maintain influence in the AI ecosystem.