23 October 2026
Meta releases Muse Spark Open, a large free-to-download AI model
First reported
Deep Learning Weekly ran this on .
- Meta has released Muse Spark Open, an AI model that anyone can download and run themselves.
- The model is very large, with 816 billion parameters, though only about 42 billion are used on any single task.
- It can hold roughly a million words of text in one conversation, a 'context window' that measures how much it can keep in mind at once.
Our read
Only one of the 30 tracked newsletters, Deep Learning Weekly, covered this release. It follows three earlier Meta Muse stories in our archive dated September 4 and October 18 and 20, the last two of which describe Meta keeping its strongest model subscription-only, while this release is the free-to-download Muse Spark Open.
Earlier on this story
Written by Newskeryx from which newsletters covered this story and from our own archive.
How it was covered
Deep Learning WeeklyEditorial team
Model size and architecture, context length, benchmark score, and local hardware setup