Meta 15日发布开放权重模型 Muse Spark Open，称其为迄今最强美国开放权重模型。该模型采用原生多模态架构，总参数816B、激活42B，上下文窗口达1M token，专为代码构建与智能体协作优化，在长程任务、复杂软件工程和多步推理上表现突出。其本地部署门槛极低，依托MLX框架，成为同级首个仅需两台搭载M5 Ultra芯片设备即可运行的模型。
阶跃星辰正式发布并开源Step5Preview模型权重，面向全球开发者公开BF16与FP8权重、技术博客及配套开源开发工具。该模型此前在OpenRouter周榜、日榜调用量排名中一度稳居全球第二。架构上，它专为长程复杂智能体任务深度优化，采用稀疏MoE架构，总参数量高达600B。
上海AI实验室开源书生-S2，通用能力居开源第一梯队，生物、材料、化学等科学长程任务比肩顶尖闭源模型。其采用Memory Decoder架构，配备可插拔专业记忆模块，如“外挂大脑”，按需插入专业记忆即可深耕领域，无需重训，且不影响原有通用能力。
阿里云千问AI平台近日更新模型矩阵，正式接入智谱GLM-5.3与DeepSeek-V4-Pro，并开放API。两款模型均聚焦编程与智能体场景：GLM-5.3强化编程、长程任务与网络安全能力；DeepSeek-V4-Pro升级智能体交互，适配代码开发及多步骤复杂任务处理。
Openai
$2.8
Input tokens/M
$11.2
Output tokens/M
1k
Context Length
Google
$0.49
$2.1
Anthropic
$105
$525
200
$0.7
$7
$35
$17.5
$21
Alibaba
$4
$16
$6
$24
256
Moonshot
Xai
$1.4
$10.5
$1.6
128
$1.75
$14
400
$0.35
$2
-
64
$0.63
$3.15
131
$15
Bytedance
$0.8
$8
Chatglm
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