Design Arena announces that Meta's Muse Spark Open is now available on its platform. Meta describes it as the most capable US open-weight model to date, built for coding, agentic work, and multi-step reasoning, with 816B total and 42B active parameters, a 1M-token context window, and native text, image, video, and audio support.
Muse Spark Open by @Meta is now available on Design Arena!
With 816B total parameters and a 1M-token context window, Muse Spark Open is built for complex software engineering, long-horizon agentic tasks, and multi-step reasoning. Its open weights allow developers to run, customize, and deploy the model across a range of hardware and inference frameworks.
Congrats to the @Meta team on the launch!
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
This story is featured in top picks: “Meta releases Muse Spark Open, a 816B open-weight model for coding and agents”
Source: Design Arena · x.comPublished · added here
