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 con…↗

Why open-weight models that compress margins at the model layer are net positive for AI infra demand, exhibit 1001. An open-weight token consumes *roughly* the same amount of compute as a frontier token for a similar size model.↗

Introducing Beam: a highly efficient agentic open model with 501B total parameters and 23B active. - Frontier reasoning efficiency - Advances the Western open frontier on coding & agentic tasks - Trained end-to-end from scratch Full weights release this month. Learn more about…↗

i recently used an open weight model i’ve customized to find & test promotion codes while shopping. one time it found an employee only code for 60% off everything at a major retailer, & i’ve used it like 5 times already. i know i should probably email them at this point but i wa…↗

Attackers have frontier AI. Defenders need a frontier AI ecosystem—the best open and closed models, force-multiplied by a global community. During the Hugging Face incident, closed AI blocked essential forensics. An open-weight frontier model helped contain the intrusion. That’…↗

Capitalism is just so beautiful. $8 trillion worth of market cap coming out in support of open-weight models because it's good for their business and makes them look good... and, totally coincidentally, it also happens to be better for us consumers and practically every busin…↗

I went to Miami to chat with @thdxr, co-founder of OpenCode. We talked about the future of software engineering, coding agents, and why open source matters more now than ever. Timestamps: 0:00 Intro 5:30 Miami vs San Francisco tech scene 15:05 OpenCode origin story, scaling wh…↗