Alexandr Wang says Muse Spark Open is the most capable US open-weight model to date. The model has 816B total parameters, 42B active, a 1M-token context window, and native multimodal support. It is built for coding and agentic work, including long-horizon tasks, software engineering, and multi-step reasoning.
1/ muse spark open is the most capable US open-weight model to date.
816B total params, 42B active. 1M-token context. natively multimodal. built for coding and agentic work like long-horizon tasks, hard software engineering, multi-step reasoning.
america! 🇺🇲
This story is featured in top picks: “Meta releases Muse Spark Open with API access and downloadable weights”
Source: Alexandr Wang · x.comPublished
