Meta LLM Big Closed weights

Muse Wonder Full

31 days since Meta announced it · 12 Oct 2026

Muse Wonder Full is a closed-weights LLM from Meta, announced 12 Oct 2026. Its context window is 1M tokens.

Input: —; per 1M tokens
Cache write: —; per 1M tokens
Cache read: —; per 1M tokens
Output: —; per 1M tokens
Context window: 1M; tokens
Parameters: —; not disclosed

No price on the lab’s own pages.

Announcement: about.fb.com/news/2026/10/introducing-muse-wonder-models
Docs: dev.meta.ai/models/muse-wonder

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Meta · Big · Wonder Full

closed weights

Muse Wonder Full 12 Oct 2026

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Facts last updated 20 Oct 2026, from Meta’s own pages.