Scale Labs(@ScaleAILabs):Congratulations to @AIatMeta on releasing Muse Spark Open. An incredible achievement and an exciting step toward a future with more choice in AI. The @Muse family has been especially strong on multi-step coding workflows, and open weights make it much easier to tune those capabilities for custom use cases. We’re proud to work with the @Meta team!

2026.10.15 21:52

Congratulations to @AIatMeta on releasing Muse Spark Open. An incredible achievement and an exciting step toward a future with more choice in AI. The @Muse family has been especially strong on multi-step coding workflows, and open weights make it much easier to tune those capabilities for custom use cases. We’re proud to work with the @Meta team!

AI at Meta@AIatMeta

2026.10.15 17:08

Today we’re releasing Muse Spark Open, the most capable US open-weight model to date. Built for coding and agentic work, it excels at long-horizon tasks, complex software engineering, and multi-step reasoning. Key Model Specs: → 816B total / 42B active parameters → 1M token context window → Natively multimodal across text, image, video, audio