Claude Code v2.1.197: Claude Sonnet 5 Becomes the Default Model
Claude Code v2.1.197 introduces Claude Sonnet 5 as the new default model, featuring a native 1M-token context window and promotional pricing of $2/$10 per Mtok through August 31.
The Claude Code development team has released version 2.1.197, a milestone update that ships Claude Sonnet 5 as the new default model. This release centers on a single but significant change: bringing Anthropic’s latest Sonnet-class model, with its native 1M-token context window, directly into Claude Code by default.
What’s New
Claude Sonnet 5 Is Now the Default Model
Claude Sonnet 5 is now the default model in Claude Code. The new model features a native 1M-token context window, allowing you to work with much larger codebases and longer sessions without hitting context limits as quickly.
Promotional Pricing Through August 31
Claude Sonnet 5 launches with promotional pricing of $2/$10 per Mtok (input/output), available through August 31. See the official announcement for full details.
Note that access to Claude Sonnet 5 in Claude Code requires updating to version 2.1.197.
How to Update
To update to Claude Code v2.1.197:
- Check your current version:
claude --version - Update using your preferred method:
- Package manager: Follow your distribution’s update process
- Direct download: Visit the release page for platform-specific binaries
- Start a new session — Claude Sonnet 5 will be selected as the default model automatically