Gemini Decisions API from Google bills shared input once, so 20 checks on a 4,000-token record cost about 50 cents per 1,000 records instead of $8.10, per Implicator. But Artificial Analysis found the ...

Every Node.js project accumulates vulnerable dependencies. The npm registry holds over 2.5 million packages, and researchers found 454,000 malicious or vulnerable packages uploaded in 2025 alone.

前两篇把一个售后助手搭了起来，加上会话记忆和结构化输出，它已经能处理一段真实对话。但接进业务系统还差几步：工具怎么知道当前用户是谁，长任务怎么先给一句反馈，出问题又该怎么排查。这篇补齐运行时上下文、长期记忆、流式输出和 LangSmith。