---
id: 20260929-T0-19
title: "Claude Code v2.1.284更新：默认切换至Sonnet 5.5，支持100万上下文"
title_en: "Claude Code v2.1.284 Adds Sonnet 5.5 as Default with 1M Context"
url: https://ai.daily.yangsir.net/daily/20260929-T0-19
issue_date: 2026-09-29
publish_date: 2026-09-28T18:02:03.000Z
category: release
source_name: "Claude Code Releases"
source_url: https://github.com/anthropics/claude-code/releases/tag/v2.1.284
---

# Claude Code v2.1.284更新：默认切换至Sonnet 5.5，支持100万上下文

Claude Code发布v2.1.284版本，新增Claude Sonnet 5.5（claude-sonnet-5-5）作为Anthropic API上的默认Sonnet模型，支持100万token上下文，定价$2/$10每百万token，缓存读取$0.20/百万token。此外新增了自动模式下的回答选项，当读取工作目录外文件时，用户可选"是，但下次再问"。对开发者来说，这意味着在Claude Code中获得了更大的上下文窗口和更新的默认模型，减少手动配置。

## English Version

**Claude Code v2.1.284 Adds Sonnet 5.5 as Default with 1M Context**

Claude Code released v2.1.284, adding Claude Sonnet 5.5 (claude-sonnet-5-5) as the default Sonnet model on the Anthropic API with 1M token context, priced at $2/$10 per Mtok with $0.20/Mtok cache reads. It also adds a 'Yes, but ask again next time' option when auto mode prompts before reading outside working directories. For developers, this means a larger context window and an updated default model in Claude Code with less manual configuration.

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**来源**：[Claude Code Releases](https://github.com/anthropics/claude-code/releases/tag/v2.1.284)

**详情页**：https://ai.daily.yangsir.net/daily/20260929-T0-19

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