Day 7 receipt
Muse Spark Open
Day 1 of 7Meta's 816B-parameter open-weight coding and agent model, pitched as runnable at home on two Mac Studios.
Launch dayWhat they claimed, quoted word for word · 4
“Muse Spark Open is the first model in its class to run on your desktop using two Apple M5 Ultra Mac Studios with the latest MLX framework.”
No hands-on reports yet; commenters could not find inference speeds.
“Muse Spark Open is available today through API platforms at Baseten, Fireworks AI, Groq, Modal, Nebius, OpenRouter and Together AI.”
No user reports either way yet.
“We’re releasing the weights under the Muse Model License with limited commercial terms, which allow many developers to use the model for free.”
Accurate as far as it goes. Commenters point out that large inference providers need a separate licence, and the Hugging Face repo is gated behind a manual access request.
“Muse Spark Open is a natively multimodal model with 816B total parameters (42B active) and a 1M-token context window.”
Spec claim; no user tests of the context window yet.
Day 7What real users report · 3
A commenter quoted Meta's suggested Mac Studio setups and said they could find no information on inference speed.
Comment in an 860-point thread · Open the source
A commenter noted the licence requires large inference providers to get a separate licence from Meta, which they expect to reduce price competition between hosts.
Comment in an 860-point thread · Open the source
On the model's Hugging Face page, a user objected that downloading requires handing over personal data and said it put them off trying it.
Hugging Face discussion · Open the source