Claude Code 2.1.284 发布：新增 Sonnet 5.5 默认模型

AI 摘要

Anthropic 发布 Claude Code 2.1.284 更新，新增 Claude Sonnet 5.5 模型（claude-sonnet-5-5）并设为 Anthropic API 上的默认 Sonnet 模型，支持 1M 上下文，定价为每百万 token 输入 2 美元、输出 10 美元，缓存读取 0.20 美元。本次更新还改进了自动模式权限提示、网关支出限额显示、MCP 重连与超时处理、压缩后仍超长时的二次压缩，并修复了大量流式响应、会话恢复、插件、vim 模式及终端渲染相关的问题。

正文节选

- Added Claude Sonnet 5.5 (`claude-sonnet-5-5`), now the default Sonnet model on the Anthropic API — 1M context, $2/$10 per Mtok with $0.20/Mtok cache reads - Added a "Yes, but ask again next time" answer to auto mode's prompt before a read outside the working directories, so you can allow that one read and still be asked about later ones - Added dollar amounts to the Claude apps gateway spend limit in `/usage` and the status line (for example "$271.40 / $500.00 spent this month") when the gatew

发布时间：—

抓取时间：2026-09-29 02:13

来源机构：Anthropic