AI 导读
Meta 发布开源权重模型 Muse Spark Open，称为迄今最强美国开源权重模型，主打编码、智能体与长程任务。参数为 816B 总量、42B 激活，支持 1M token 上下文窗口，原生多模态覆盖文本、图像、视频和音频。作者评论称 Meta 重返开源路线，基准图显示其在 MCP-Atlas、HLE-Diamond 等多项基准上领先对比模型，但实际质量仍需自行测试。
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作者转引 Meta 开源模型发布并附多基准对比图，读者可据此自行核验其在开源前沿模型中的表现。
正文
Damn!
Looking at the results, Meta really cooked here!
More progress on frontier open models is always a big deal.
Great to see Meta going back to its roots. The only way to know this checkpoint's quality is to test it yourself.
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在 X 查看被引用的帖子
来源：elvis · x.com