Claude Code v2.1.197 introduces Claude Sonnet 5

Anthropic has released version 2.1.197 of Claude Code, which updates the default model to Claude Sonnet 5. This new model features a native 1M-token context window and is available with promotional pricing through August 31.

• Claude Sonnet 5 is now the default model in Claude Code.
• The update requires version 2.1.197 for access.
• Promotional pricing is set at $2/$10 per Mtok until August 31.