Checked fact 161216 Oct 2026Models and releases

Muse Spark Open has 816 billion parameters in total and activates 42 billion parameters per token.

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The exact words it rests on

An 816B-parameter open-weight model from Meta Superintelligence Labs ... It activates 42B parameters per token

What the source said when we opened it, on 16 Oct 2026.

The source

Build with Muse Spark Open
Meta · 2026-10-15

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Checked

Checked by the notis newsroom on 16 Oct 2026, against the source above.

In the story

Meta releases open-weight Muse Spark Open under its own licence 16 Oct 2026

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In a sentence

“Muse Spark Open has 816 billion parameters in total and activates 42 billion parameters per token.” ai notis, checked 16 Oct 2026. Source: Build with Muse Spark Open (Meta). https://ainotis.com/c/1612

As a reference (APA style)

ai notis. (2026, October 16). Muse Spark Open has 816 billion parameters in total and activates 42 billion parameters per token [Checked claim 1612]. ai notis. https://ainotis.com/c/1612

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