Meta · Released 2026-10-15
816B total parameters and 42B active, with text, image, audio and video inputs and text output. Self-host under the Muse Model License; published quantized examples still occupy hundreds of GB of memory. AA at xhigh scores 39, separately from Spark 1.3 and Wonder.
Original model explanation ↗39points
Intelligence Index
Rank 23 among included models
Test configuration: xhigh
Source read · · v4.3.2
Each model uses its highest tested setting, with fallback conditions retained. Original K3 remains at max44 from its readable individual page; the aggregate page now lists K3.1 Pro separately. Scores use one evaluator. The index mainly evaluates English text tasks; examine Chinese and image capabilities separately.
Source evaluation & rankings ↗Published topic addition, not BitShovel inference
On October 15, Meta released Muse Spark Open for deployment, modification and fine-tuning under its license, continuing Llama’s route of putting models in other developers’ hands.
Independent text evaluation · xhigh · distinct from Spark 1.3
Published family background, not a dedicated Open test
LLaMA arrived on February 24, 2023, in 7B, 13B, 33B and 65B sizes.
Official parameters, modalities and weight-access conditions
Framework-team testing, not BitShovel local inference
Coding, debugging and codebase understanding advance through co-training with Muse Code; the model and terminal agent launch together as distinct layers.
Original release ↗The release emphasizes longer tasks, tool use and coding, with max effort available in Muse Code and Meta Model API.
Original release ↗The new series emphasizes Active Memory, Active Focus, long-running tasks and coding. Wonder opens through Meta Model API and Muse Code; Full is for Muse Code subscribers. Personal Muse integration remains a later rollout.
Original release ↗The 816B-total, 42B-active multimodal model releases weights under the Muse Model License. It derives from August’s Spark with additional safety post-training, rather than the same weights as Spark 1.3 or Wonder.
Original release ↗