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Industry news, technical articles, and product introductions
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The first half of 2026 pushed Claude Code well beyond the single-session workflow: multi-agent teams, subagents that recurse up to 5 levels deep, background sessions with Agent View, and an Opus-class Fast Mode. Based on the official docs and changelog, here is what each feature does, how to turn it on, and when it's actually worth using.
2026 年上半年 Claude Code 的能力边界被大幅推宽：多智能体团队协作、可递归 5 层的嵌套子代理、后台会话与 Agent View、Opus 级 Fast Mode。本文基于官方文档与 changelog，逐一讲清每个新功能是什么、怎么开、什么场景值得用。