---
id: 20260923-T0-03
title: "Claude Code v2.1.280发布：默认模型升级为Opus 5.5，支持100万上下文"
title_en: "Claude Code v2.1.280 Adds Opus 5.5 as Default with 1M Context"
url: https://ai.daily.yangsir.net/daily/20260923-T0-03
issue_date: 2026-09-23
publish_date: 2026-09-22T16:38:14.000Z
category: release
source_name: "Claude Code Releases"
source_url: https://github.com/anthropics/claude-code/releases/tag/v2.1.280
---

# Claude Code v2.1.280发布：默认模型升级为Opus 5.5，支持100万上下文

Claude Code发布v2.1.280，新增Claude Opus 5.5并设为默认Opus模型，支持100万token上下文，定价为每百万token输入4美元、输出20美元，缓存读取每百万token 0.2美元。全屏模式下更多列表支持鼠标操作：滚轮可滚动/skills列表，/plugin中的技能状态选项可点击。新增CLAUDE_环境变量。

## English Version

**Claude Code v2.1.280 Adds Opus 5.5 as Default with 1M Context**

Claude Code released v2.1.280, adding Claude Opus 5.5 as the default Opus model with 1M token context, priced at $4/$20 per million tokens with $0.20 per million cache reads. More lists in fullscreen mode now support mouse: the wheel scrolls the /skills list, and skill state options in /plugin are clickable. A new CLAUDE_ environment variable was added.

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**来源**：[Claude Code Releases](https://github.com/anthropics/claude-code/releases/tag/v2.1.280)

**详情页**：https://ai.daily.yangsir.net/daily/20260923-T0-03

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