Meta
LLM
Big
Open weights
Muse Spark Open
28 days since Meta announced it ·
Muse Spark Open is an open-weights LLM from Meta, announced 15 Oct 2026. Its context window is 1M tokens. It has 816B parameters.
- Input
- —
- per 1M tokens
- Cache write
- —
- per 1M tokens
- Cache read
- —
- per 1M tokens
- Output
- —
- per 1M tokens
- Context window
- 1M
- tokens
- Parameters
- 816B
- total
No price on the lab’s own pages.
- Announcement
- research.meta.ai/blog/muse-spark-open
- Docs
- dev.meta.ai/docs/muse-spark-open
Our coverage
1 storyMeta · Big
open weights- Muse Spark Open
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