Meta quietly releases Muse Spark Open: 816B-param MoE with 42B active, on Hugging Face
victormustar · x · 2026-10-16
Meta has published a new open-weights collection on Hugging Face under the meta-models org, headlined by Muse Spark Open — an 816B-parameter MoE model with 42B active parameters, image-text-to-text capable, released in both BF16 and NVFP4 weight formats. A smaller model, Muse Glimmer, is also part of the collection. Weights are already downloadable.
Related event: Meta Open-Sources Muse Spark Open with 816B Parameters and 1M Context(39 posts)→
More from Models
- OpenAI ships GPT-Live-1.1: new voices in six languages, fewer confirmations — OpenAI · 2026-10-16
- Muse Spark model appears on LMArena, testable in Battle and Agent modes — arena · 2026-10-16
- Running a multi-model UI design arena: Paseo orchestrates four design drafts per model — vista8 · 2026-10-16
- Ilya Sutskever questions Meta license clause taxing MaaS providers above $20M revenue — ilyasu · 2026-10-16
- Muse-Spark open-weights drop: 816B-A42B MoE model gets 359GB MLX 3-bit build — ns123abc · 2026-10-16
- Midas flags inconsistent Claude limits: 33% weekly and 45% window usage despite $100 credits, yet out of API credits — TheMoonMidas · 2026-10-16