AI 导读
Nathan Lambert 转评 Muse Spark Open，称其为迄今最强美国开源权重模型，816B 总参数、42B 激活、1M token 上下文、原生多模态，面向编码和长程智能体任务。他判断若跑分属实，该模型采用率会激增，是美国首个具备接近前沿智能体能力的开源权重模型，此前这一步由中国的 GLM 5.2 和 Kimi K3 迈出。
推荐理由
作者从 adoption 角度评估一款美国开源权重模型的智能体能力，可与来自中国的 GLM、Kimi 系列形成对照。
正文
If it performs roughly what like the scores indicate, adoption of this model is going to go gangbusters. First open-weigh model in the US with near frontier agentic capabilities (GLM 5.2 + Kimi K3 was that step change from China). US models get crazy adoption.
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! 🇺🇲在 X 查看被引用的帖子
来源：Nathan Lambert · x.com