开放权重模型以稀疏架构加速中美竞争Reflection AI发布Beam,宣称采用约5010亿总参数、每次激活约230亿参数,并面向编程、推理和代理任务,以较低推理成本对标中国开放模型。性能、成本、百万上下文和美国竞争优势目前主要来自厂商自述,仍需独立基准、权重许可、硬件适配、真实部署与开发者采用验证。Sources (4)Reflection AI releases first open model to rival Chinathehill.comReflection debuts Beam, an open-weight AI model to rival Chinese models at lower compute costtechcrunch.comNvidia-backed Reflection AI unveils its first open model, Beam. Could it be America’s best chance to compete with China?fortune.comNvidia-backed Reflection unveils first AI model to take on Chinese open modelsreuters.comUpdated Oct 5, 2026