OPEN WEIGHTS
Meta ships Muse Spark Open, its most capable open-weights model yet
Meta open-sourced Muse Spark Open, pitched as the strongest US open-weights model to date, built for long-running agentic coding that keeps entire codebases in context. LMSYS contributed NVFP4 MegaMoE, sequence parallelism, and DFlash2 acceleration at launch, and Together AI is hosting it free until Oct 18.




