Muse Spark Open
Meta's open model for running on your own servers: 25 on Artificial Analysis's index, level with Mistral Large 4, with no per-use price and Meta's own licence to read first.
Key facts
- Score
- 54 / 100, rank #26Tests42Pricen/aPeoplen/aFit85
- Price
- No verified list price
- Reads at once
- 1M tokens (about 750,000 words)
- Where you can get it
- Amazon SageMaker JumpStart
- Host it yourself
- Yes (open weights)
- Released
- Oct 15, 2026
- Best for
- Running AI on your own servers or your AWS account, Keeping sensitive data in-house
Meta has not published a list price for Muse Spark Open that we could verify from a primary source. See what every model costs for the same job.
Independent tests
| Test | Result | Who ran it | Read |
|---|---|---|---|
| Artificial Analysis Intelligence Index (xhigh) | 25 | Artificial Analysis LLM leaderboard | Nov 12, 2026 |
| Humanity's Last Exam, Diamond (Scale) | 28.00 | Scale Labs: Humanity's Last Exam (Diamond) leaderboard | Nov 12, 2026 |
| Humanity's Sixth Sense (Scale) | 29.60 | Scale Labs: Humanity's Sixth Sense leaderboard | Nov 12, 2026 |
Caveats
- There is no per-use price: you pay for the hardware, and neither Meta nor AWS states what that costs.
- The licence is Meta's own, with a usage policy, not a standard open licence: have legal read it.
- It is a very large model that needs data-centre hardware.
- Meta's own test figures are not counted.
Questions people ask
How much does Muse Spark Open cost?
Meta has not published a list price for Muse Spark Open that we could verify from a primary source.
How good is Muse Spark Open?
Muse Spark Open ranks #26 of 33 on the Models at Work leaderboard with a score of 54 out of 100 (November 2026 edition). Meta's open model for running on your own servers: 25 on Artificial Analysis's index, level with Mistral Large 4, with no per-use price and Meta's own licence to read first.
What is Muse Spark Open best for?
Muse Spark Open is best for running ai on your own servers or your aws account, keeping sensitive data in-house.
How does Muse Spark Open do on independent tests?
Artificial Analysis Intelligence Index (xhigh): 25 (Artificial Analysis LLM leaderboard); Humanity's Last Exam, Diamond (Scale): 28.00 (Scale Labs: Humanity's Last Exam (Diamond) leaderboard); Humanity's Sixth Sense (Scale): 29.60 (Scale Labs: Humanity's Sixth Sense leaderboard).
How much can Muse Spark Open read at once?
Muse Spark Open can take in 1M tokens (about 750,000 words) in one go, according to Meta. Vendors call this the context window.
Where can a business get Muse Spark Open?
Muse Spark Open is available through Amazon SageMaker JumpStart.
Can a company host Muse Spark Open itself?
Yes. Muse Spark Open is released with open weights, which means a company can download the model and run it on its own servers. That needs engineers.
Compare Muse Spark Open
How the score works: Score is 0 to 100 and computed, not typed. 40% is independent testing (Artificial Analysis, Arena, Scale, Epoch, Vals and others; each test is scaled against the best score on this board, and tests of real work, such as finished freelance projects or professional tasks, count double the exams). 30% is price: the vendor's list price for a typical mix of reading and writing, on a fixed scale from $0.05 to $60 per million tokens, so a model that costs a fifth as much gains real ground. 15% is what people report after running it, from Signals and linked threads. 15% is fit: how much text it can take in at once and where a business can get it (the products and clouds that carry it), with a small credit for open weights. A missing component drops out and the rest are reweighted. A model with no independent test yet is provisional and ranks below every measured one. Within three points is a tie. Vendor-published figures are labelled and never counted. Our coverage: read the article.