All modelsMODEL / FRONTIER COVERAGEMuse Spark OpenTYPEModelSIGNALS5FIRST SEENOct 14, 2026LAST SEENOct 19, 2026Recent signalsMuse Spark Open on Fireworks: Meta’s Open Weights Model, Available on US Serverless Oct 19, 2026Meta launches an open-weight AI model that runs on Macs Oct 15, 2026Meta says it worked with Apple to make Muse Spark Open run locally on M5 Ultra Mac Studios, letting users pair two to four Studios to code or do agentic work (CNBC) Oct 15, 2026Meta releases Muse Spark Open, saying it is the most capable US open-weight model, with 816B total and 42B active parameters and a 1M-token context window (Meta AI Research) Oct 15, 2026Meta Muse Spark Open is live on Together AI Oct 14, 2026RELATEDMetaOpen-weight modelsAppleCNBCTim CookMark ZuckerbergTogether AIJohn TernusALL MODELSLATEST SIGNAL